Biology Final Exam Quiz-7

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Questions: 79 | Attempts: 328

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Biology Exam Quizzes & Trivia

Biology is a natural science involving the study of living things. Its vast in nature thus it offers much to learn about and different topics to delve in. Take up the quiz to learn more about the reproductive system of both male and female.


Questions and Answers
  • 1. 

    Seminal fluid, excluding the sperm, is produced by all except

    • A.

      Cowpers gland

    • B.

      Prostate

    • C.

      Seminal vesicle

    • D.

      Ovary

    Correct Answer
    D. Ovary
    Explanation
    Seminal fluid, which is responsible for nourishing and protecting the sperm, is produced by the Cowpers gland, prostate, and seminal vesicle. The ovary, on the other hand, is not involved in the production of seminal fluid. Instead, the ovary is responsible for producing eggs (ova) in females. Therefore, the correct answer is ovary.

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  • 2. 

    The tissue of the penis and clitoris which fills with blood for erection would be called the 

    • A.

      Corpora cavernosa

    • B.

      Corpora spongiosum

    • C.

      Prostate

    • D.

      Cowpers gland

    • E.

      A and b

    Correct Answer
    E. A and b
    Explanation
    The tissue of the penis and clitoris that fills with blood for erection is called the corpora cavernosa and corpora spongiosum. The corpora cavernosa is responsible for the majority of the penile rigidity during an erection, while the corpora spongiosum surrounds the urethra and helps maintain the shape of the penis during an erection. Both of these tissues play crucial roles in the physiological process of erection.

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  • 3. 

    After about 4 months into pregnancy, removal of the ovaries will NOT terminate pregnancy because the placenta produces

    • A.

      Human chorionic gonadotropin

    • B.

      LH

    • C.

      Progesterone

    • D.

      LTH

    • E.

      Estrogen

    Correct Answer
    A. Human chorionic gonadotropin
    Explanation
    During pregnancy, the placenta takes over the production of hormones that are essential for maintaining the pregnancy. One of these hormones is human chorionic gonadotropin (hCG). hCG plays a crucial role in supporting the development of the fetus and preventing miscarriage. Therefore, even if the ovaries are removed after about 4 months into pregnancy, the placenta will continue to produce hCG, ensuring the continuation of the pregnancy.

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  • 4. 

    Approximately how many sperm actually reach the egg for fertilization

    • A.

      Millions

    • B.

      Thousands

    • C.

      Hundreds

    • D.

      Less than 100

    Correct Answer
    B. Thousands
    Explanation
    Thousands of sperm actually reach the egg for fertilization. This is because during ejaculation, millions of sperm are released into the female reproductive tract. However, only a small fraction of these sperm are able to survive the journey through the cervix, uterus, and fallopian tubes to reach the egg. The majority of sperm will either die or be expelled from the body. Therefore, the number of sperm that actually reach the egg is in the thousands.

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  • 5. 

    The sugar fructose in the seminal fluid provides the sperm nutrition, while pH buffers protect the sperm from acid

    • A.

      True

    • B.

      False

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    A. True
    Explanation
    The explanation for the given correct answer is that fructose, a type of sugar found in seminal fluid, provides nutrition to the sperm. This is important for their survival and energy production during fertilization. Additionally, pH buffers in the seminal fluid help protect the sperm from the acidic environment of the female reproductive tract, ensuring their viability and ability to reach the egg. Therefore, the statement is true.

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  • 6. 

    Initiation of both egg and sperm production is controlled by         , whereas testosterone production by the interstitial cells of Leydig is controlled by         

    • A.

      Progesterone, Estrogen

    • B.

      LH, FSH

    • C.

      FSH, LH

    • D.

      Unicorn semen, rainbows

    Correct Answer
    C. FSH, LH
    Explanation
    The initiation of both egg and sperm production is controlled by FSH (follicle-stimulating hormone) and LH (luteinizing hormone). FSH stimulates the development of ovarian follicles in females and the production of sperm cells in males. LH triggers ovulation in females and stimulates the production of testosterone in males by the interstitial cells of Leydig. Therefore, FSH and LH are the hormones responsible for regulating the reproductive processes in both males and females.

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  • 7. 

    By filling with blood, which tissues play a major role in penile erection?

    • A.

      Corpora cavernosa

    • B.

      Corpora spongiosum

    • C.

      Prostate

    • D.

      Cowpers gland

    • E.

      A and B (the corporas)

    Correct Answer
    E. A and B (the corporas)
    Explanation
    The corpora cavernosa and corpora spongiosum are the tissues that play a major role in penile erection. These tissues fill with blood during sexual arousal, causing the penis to become erect. The prostate and Cowper's gland are not directly involved in the process of penile erection.

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  • 8. 

    The egg must be fertilized in the upper 1/3 of the uterus

    • A.

      True

    • B.

      False

    • C.

      Blue

    • D.

      26

    Correct Answer
    B. False
    Explanation
    The statement "The egg must be fertilized in the upper 1/3 of the uterus" is false. Fertilization of the egg typically occurs in the fallopian tubes, not in the uterus. After ovulation, the egg is released from the ovary and travels through the fallopian tube where it can be fertilized by sperm. Once fertilized, the egg then implants itself in the uterus for further development.

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  • 9. 

    Sperm are no longer ejected after a vasectomy because the         is cut or ligated?

    • A.

      Epididymis

    • B.

      Vas deferens

    • C.

      Urethra

    • D.

      Weiner

    Correct Answer
    B. Vas deferens
    Explanation
    After a vasectomy, sperm are no longer ejected because the vas deferens is cut or ligated. The vas deferens is a tube that carries sperm from the testicles to the urethra for ejaculation. By cutting or ligating the vas deferens during a vasectomy, the pathway for sperm to be released is blocked, preventing them from reaching the urethra and being ejaculated. This is a permanent form of contraception as it prevents sperm from being present in the ejaculate.

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  • 10. 

    The two hormones of birth control pills would be                  

    • A.

      Testosterone and estrogen

    • B.

      Testosterone and progesterone

    • C.

      Progesterone and FSH

    • D.

      Estrogen and progesterone

    • E.

      FSH and LH

    Correct Answer
    D. Estrogen and progesterone
    Explanation
    The correct answer is estrogen and progesterone. Birth control pills contain synthetic forms of these two hormones, which work together to prevent pregnancy. Estrogen helps to suppress the release of eggs from the ovaries, while progesterone thickens the cervical mucus, making it difficult for sperm to reach the egg. Additionally, progesterone also thins the lining of the uterus, making it less receptive to implantation. By combining these two hormones, birth control pills are highly effective in preventing pregnancy.

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  • 11. 

    Castration or removal of the testes before puberty will interfere with development of secondary sex characteristics in males such as voice, muscle mass, and hairyness

    • A.

      True

    • B.

      False

    • C.

      Pass

    • D.

      That would hurt, amiright?

    Correct Answer
    A. True
    Explanation
    Castration or removal of the testes before puberty will indeed interfere with the development of secondary sex characteristics in males. The testes produce testosterone, which is responsible for the development of these characteristics such as deepening of the voice, increased muscle mass, and the growth of body hair. By removing the testes, the production of testosterone is significantly reduced, leading to a lack of development in these secondary sex characteristics.

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  • 12. 

    The pituitary gland of both males and females produced FSH and LH but the cell receptors are different

    • A.

      True

    • B.

      False

    • C.

      Ture

    • D.

      Flase

    Correct Answer
    A. True
    Explanation
    The statement is true because the pituitary gland in both males and females produces follicle-stimulating hormone (FSH) and luteinizing hormone (LH). However, the cell receptors for these hormones differ between males and females. This difference in receptors allows FSH and LH to have different effects in males and females, contributing to the regulation of reproductive processes specific to each sex.

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  • 13. 

    Follicles in the ovary rupture to release the egg on/or about five days into the cycle

    • A.

      True

    • B.

      False

    • C.

      Rupture?!

    • D.

      Pick this one

    Correct Answer
    B. False
    Explanation
    The statement "Follicles in the ovary rupture to release the egg on/or about five days into the cycle" is false. The follicles in the ovary actually rupture to release the egg around day 14 of the menstrual cycle, not five days into the cycle. This process is known as ovulation.

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  • 14. 

    The egg ovulates under the influence of LH on about the 14th day of menstruation 

    • A.

      True

    • B.

      False

    • C.

      Eggs

    • D.

      Haha

    Correct Answer
    A. True
    Explanation
    The explanation for the given correct answer is that LH (luteinizing hormone) is responsible for triggering ovulation, which is the release of an egg from the ovary. Ovulation typically occurs around the 14th day of the menstrual cycle, although this can vary slightly among individuals. Therefore, the statement that the egg ovulates under the influence of LH on about the 14th day of menstruation is true.

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  • 15. 

    The fertilized egg develops to term (to birth) in the       

    • A.

      Oviduct

    • B.

      Vagina

    • C.

      Ovary

    • D.

      Uterus

    Correct Answer
    D. Uterus
    Explanation
    The correct answer is uterus. The uterus is the organ in the female reproductive system where the fertilized egg implants and develops into a fetus. It provides a suitable environment for the growth and development of the embryo, including the necessary nutrients and oxygen. The uterus also undergoes changes during pregnancy to accommodate the growing fetus and contracts during labor to facilitate childbirth. The oviduct, vagina, and ovary have different roles in the reproductive process but do not support the development of the fertilized egg to term.

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  • 16. 

    The characteristic/ gene that causes maleness is located in the         

    • A.

      Autosome

    • B.

      X chromosome

    • C.

      Y chromosome

    • D.

      Ribosome

    Correct Answer
    C. Y chromosome
    Explanation
    The Y chromosome is responsible for determining maleness in humans. It contains the SRY gene, which triggers the development of male characteristics during embryonic development. This gene instructs the gonads to develop into testes, which then produce testosterone and other male hormones. Without the presence of the Y chromosome and the SRY gene, an individual will develop female characteristics. Therefore, the Y chromosome is the correct answer as it carries the gene responsible for maleness.

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  • 17. 

    The tip of the clitoris which has lots of touch responding sensory neurons like it's homolog, the penis, would be called the               

    • A.

      Glans clitoris

    • B.

      Corpora spongiosum

    • C.

      Prostate

    • D.

      Cowpers gland

    Correct Answer
    A. Glans clitoris
    Explanation
    The tip of the clitoris, which is highly sensitive to touch, is called the glans clitoris. This term is used to describe the external portion of the clitoris that contains numerous sensory neurons, similar to the penis. The glans clitoris is an important part of female sexual arousal and pleasure.

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  • 18. 

    Sperm is produced the the seminiferous tubules of the testes, while eggs are produced by the germinal epithelium of the ovaries

    • A.

      True

    • B.

      False

    • C.

      Whats with all the ovaries?

    • D.

      No

    Correct Answer
    A. True
    Explanation
    The statement is true because sperm is indeed produced in the seminiferous tubules of the testes, while eggs (oocytes) are produced by the germinal epithelium of the ovaries. The testes are responsible for the production of male gametes (sperm), while the ovaries are responsible for the production of female gametes (eggs).

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  • 19. 

    In days, it takes about how long for an ovum or egg to travel down the oviduct (Fallopian tubes)

    • A.

      1

    • B.

      1-2

    • C.

      2-3

    • D.

      4-5

    Correct Answer
    C. 2-3
    Explanation
    The correct answer is 2-3 days. After ovulation, the released egg travels down the oviduct or Fallopian tube towards the uterus. This journey takes approximately 2-3 days. During this time, the egg may be fertilized by sperm if intercourse occurs. If fertilization does not occur, the egg will disintegrate and be shed along with the uterine lining during menstruation.

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  • 20. 

    The endometrium or lining of the uterus prepares for pregnancy each month by becoming more cellular and vascular under the influence of which two hormones?

    • A.

      LH

    • B.

      Estrogen

    • C.

      Progesterone

    • D.

      B and C

    • E.

      A and C

    Correct Answer
    D. B and C
    Explanation
    The endometrium or lining of the uterus prepares for pregnancy each month by becoming more cellular and vascular. This process is influenced by two hormones: estrogen and progesterone. Estrogen helps to stimulate the growth and thickening of the endometrium, while progesterone further prepares the endometrium for implantation of a fertilized egg by increasing its blood supply and promoting the development of glandular tissue. Therefore, the correct answer is B and C.

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  • 21. 

    In controlling bull(male) fertility the oviduct is ligated/cut to stop sperm from leaving the testes. the egg is surrounded by follicle cells

    • A.

      True

    • B.

      False

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    B. False
    Explanation
    The explanation for the given answer is that controlling bull fertility does not involve ligating or cutting the oviduct. The oviduct is a part of the female reproductive system, not the male reproductive system. In male animals, controlling fertility typically involves methods such as vasectomy or castration. The statement about the egg being surrounded by follicle cells is also incorrect, as follicle cells are part of the female reproductive system and are involved in the development of eggs.

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  • 22. 

    The female hormone that influences secondary female characteristics

    • A.

      Estrogen

    • B.

      Progesterone

    • C.

      Testosterone

    • D.

      Pepperoni

    Correct Answer
    A. Estrogen
    Explanation
    Estrogen is the correct answer because it is a female hormone that plays a crucial role in the development of secondary female characteristics such as breast development, regulation of the menstrual cycle, and maintenance of pregnancy. It is responsible for the growth of reproductive organs, distribution of body fat, and the development of female secondary sexual characteristics like the widening of hips and the growth of pubic and underarm hair. Estrogen is primarily produced in the ovaries but is also produced in smaller amounts by the adrenal glands and fat cells.

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  • 23. 

    In females the urogenital opening and canal of the developing fetus becomes the           and                    ?

    • A.

      Urethra, vagina

    • B.

      Ureter,urethra

    • C.

      Vagina, seminiferous tubules

    • D.

      David blane, chris angel (mindfreak)

    Correct Answer
    A. Urethra, vagina
    Explanation
    During fetal development in females, the urogenital opening and canal differentiate into the urethra and vagina. The urethra is responsible for the passage of urine from the bladder to the outside of the body, while the vagina is a muscular canal that connects the uterus to the external opening. This differentiation allows for the proper functioning of the urinary and reproductive systems in females.

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  • 24. 

    The menstrual cycle begins when which hormone starts being produced again?

    • A.

      LH

    • B.

      Estrogen

    • C.

      Progesterone

    • D.

      FSH

    • E.

      Testosterone

    Correct Answer
    D. FSH
    Explanation
    The menstrual cycle begins when follicle-stimulating hormone (FSH) starts being produced again. FSH is responsible for stimulating the growth and development of ovarian follicles, which contain the eggs. As the follicles mature, they release estrogen, which then triggers the release of luteinizing hormone (LH). LH surge leads to ovulation and the start of the menstrual cycle. Therefore, FSH is the hormone that initiates the menstrual cycle.

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  • 25. 

    Ectopic pregnancies can occur in the          

    • A.

      Ovary

    • B.

      Urinary bladder

    • C.

      Vagina

    • D.

      Oviduct

    Correct Answer
    D. Oviduct
    Explanation
    Ectopic pregnancies occur when a fertilized egg implants itself outside of the uterus. The most common location for an ectopic pregnancy is the oviduct, also known as the fallopian tube. This is because the oviduct is where fertilization typically occurs. Implantation in the oviduct can be dangerous and potentially life-threatening for the mother, as the tube is not designed to support the growth of a fetus.

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  • 26. 

    Castration after puberty can reduce sex interest in males

    • A.

      True

    • B.

      False

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    A. True
    Explanation
    Castration after puberty can reduce sex interest in males because the testicles produce testosterone, the primary male sex hormone. Removing the testicles through castration eliminates the main source of testosterone production, leading to a decrease in sexual desire and activity. This is because testosterone plays a crucial role in regulating libido and sexual function in males. Therefore, castration can effectively reduce sex interest in males.

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  • 27. 

    The tip of the penis, whose homolog would be the clitoris, is called the        

    • A.

      Corpora cavernosa

    • B.

      Corpora spongiosum

    • C.

      Prostate

    • D.

      Cowpers gland

    • E.

      Glans penis

    Correct Answer
    E. Glans penis
    Explanation
    The tip of the penis is called the glans penis. The glans penis is a highly sensitive area that is rich in nerve endings, making it an important part of sexual stimulation and pleasure. It is homologous to the clitoris in females, meaning that it develops from the same embryonic tissue. The glans penis is covered by a fold of skin called the foreskin, which is often removed in a procedure called circumcision.

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  • 28. 

    The most important function of sexual reproduction is 

    • A.

      Preserving genetic purity

    • B.

      Keeping genes from changing

    • C.

      Creating genetic variability

    • D.

      Limiting genetic recombination

    • E.

      Producing identical offspring

    Correct Answer
    C. Creating genetic variability
    Explanation
    Sexual reproduction is the process by which offspring are produced through the combination of genetic material from two parents. One of the key advantages of sexual reproduction is the creation of genetic variability. This is achieved through the random assortment of genes during the formation of gametes and the subsequent recombination of these genes during fertilization. Genetic variability is important for the survival and adaptation of a species to changing environments, as it allows for the generation of new combinations of genes, increasing the chances of advantageous traits being passed on to future generations.

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  • 29. 

    Which hormone stimulates uterine smooth muscle activity and causes milk release from mammary glands during suckling?

    • A.

      LH

    • B.

      FSH

    • C.

      Prolactin

    • D.

      Oxytocin

    Correct Answer
    C. Prolactin
    Explanation
    Prolactin is the hormone that stimulates uterine smooth muscle activity and causes milk release from the mammary glands during suckling. LH and FSH are hormones involved in the regulation of the menstrual cycle and reproductive functions, while oxytocin is responsible for uterine contractions during labor and milk letdown during breastfeeding. However, it is prolactin that specifically promotes milk production and release from the mammary glands in response to suckling.

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  • 30. 

    Which hormone inhibits production of sperm in men?

    • A.

      Estrogen

    • B.

      FSH

    • C.

      LH

    • D.

      Oxytocin

    • E.

      Inhibin

    Correct Answer
    B. FSH
    Explanation
    FSH (follicle-stimulating hormone) is the correct answer because it is responsible for stimulating the production of sperm in men. However, when the levels of FSH are high, it can also inhibit the production of sperm. This is a negative feedback mechanism that helps regulate the production of sperm and maintain a balance in the reproductive system. Therefore, FSH inhibits the production of sperm in men when its levels are elevated.

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  • 31. 

    Sperm is produced by the seminiferous tubules of the testes, while eggs are produced by the germinal epithelium of the ovaries

    • A.

      True

    • B.

      False

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    A. True
    Explanation
    Sperm is indeed produced by the seminiferous tubules of the testes, while eggs are produced by the germinal epithelium of the ovaries. This is a correct statement about the reproductive system in humans.

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  • 32. 

    Both the penis and clitoris become erect when 

    • A.

      The bone hardens

    • B.

      Their arteries and arterioles dilate

    • C.

      Penile vein dilates and arterioles constrict

    • D.

      Penile vein constricts

    Correct Answer
    B. Their arteries and arterioles dilate
    Explanation
    When the arteries and arterioles dilate, it means that they widen and allow more blood flow to the penis and clitoris. This increased blood flow causes them to become erect.

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  • 33. 

    Anabolic steroids lower blood levels of progesterone and testosterone so that sexual activity increases

    • A.

      True

    • B.

      False

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    B. False
    Explanation
    Anabolic steroids are synthetic substances that mimic the effects of testosterone in the body. While they can increase muscle mass and strength, they can also have negative side effects on hormone levels. However, it is incorrect to say that anabolic steroids lower blood levels of progesterone and testosterone to increase sexual activity. In fact, long-term use of anabolic steroids can disrupt the body's natural hormone balance and lead to a decrease in testosterone production, which can result in sexual dysfunction and decreased libido. Therefore, the statement given in the question is false.

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  • 34. 

    Which hormone stimulates milk production         and the uterine smooth smooth muscle activity and causes milk release from mammary glands during suckling

    • A.

      Prolactin, LH

    • B.

      Oxytocin, FSH

    • C.

      FSH, prolactin

    • D.

      Oxytocin, prolactin

    Correct Answer
    D. Oxytocin, prolactin
    Explanation
    During suckling, the hormone oxytocin stimulates the contraction of the uterine smooth muscle and causes milk release from the mammary glands. This hormone is responsible for the let-down reflex, which allows milk to be released and flow from the breasts. Prolactin, on the other hand, is responsible for milk production. It stimulates the development and growth of the mammary glands, as well as the production of milk. Therefore, both oxytocin and prolactin play important roles in the process of milk production and release during breastfeeding.

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  • 35. 

    Follicles in the ovary rupture to release the egg on/or about        days into the menstrual cycle

    • A.

      5

    • B.

      10

    • C.

      15

    • D.

      20

    Correct Answer
    C. 15
    Explanation
    During the menstrual cycle, the ovaries develop fluid-filled sacs called follicles, which contain eggs. Around day 14 of the menstrual cycle, one dominant follicle will rupture and release the egg. This process is known as ovulation. Therefore, the correct answer is 15, as it represents the approximate day when the follicles in the ovary rupture to release the egg.

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  • 36. 

    More than one sperm is required to fertilize an egg because the        surrounding the egg must be seperated

    • A.

      Myometrial cells

    • B.

      Fuctionalis cells

    • C.

      Endometrial cells

    • D.

      Follicle cells

    • E.

      Serosal cells

    Correct Answer
    D. Follicle cells
  • 37. 

    RU-486 (abortion pill) blocks action of

    • A.

      Estrogen

    • B.

      Testosterone

    • C.

      FSH

    • D.

      Progesterone

    Correct Answer
    D. Progesterone
    Explanation
    RU-486, also known as the abortion pill, is a medication used to terminate early pregnancies. It works by blocking the action of progesterone, a hormone that is essential for maintaining the lining of the uterus and supporting pregnancy. By inhibiting progesterone, RU-486 causes the lining of the uterus to break down, leading to the detachment of the embryo and ultimately ending the pregnancy.

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  • 38. 

    In days it takes about how long for an egg to travel down the oviduct

    • A.

      1-2

    • B.

      2-3

    • C.

      3-4

    • D.

      4-6

    Correct Answer
    B. 2-3
    Explanation
    The correct answer is 2-3. This suggests that it takes approximately 2-3 days for an egg to travel down the oviduct.

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  • 39. 

    The production of sperm occurs in the         under the influence of        

    • A.

      Seminiferous tubules, LH

    • B.

      Vas deferens, estrogen

    • C.

      Rete testes, progesterone

    • D.

      Seminiferous tubules, FSH

    Correct Answer
    D. Seminiferous tubules, FSH
    Explanation
    The production of sperm occurs in the seminiferous tubules under the influence of FSH. FSH, or follicle-stimulating hormone, is a hormone released by the pituitary gland that stimulates the production of sperm in the testes. The seminiferous tubules are the site of sperm production in the testes. Therefore, the correct answer is seminiferous tubules, FSH.

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  • 40. 

    Sperm are stored mostly in       

    • A.

      Cowpers gland

    • B.

      Prostate

    • C.

      Seminal vesicle

    • D.

      Vas deferens and epidydimus of the testes

    Correct Answer
    D. Vas deferens and epidydimus of the testes
    Explanation
    The sperm are stored mostly in the vas deferens and epididymis of the testes. The vas deferens is a tube that carries sperm from the epididymis to the urethra during ejaculation. The epididymis is a coiled tube located on top of the testes where sperm mature and are stored. These structures play a crucial role in the transportation and storage of sperm before they are released during sexual intercourse.

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  • 41. 

    The oviduct of the developing female fetus arises from the same duct that forms the sperm duct

    • A.

      True

    • B.

      False

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    B. False
    Explanation
    The oviduct of the developing female fetus does not arise from the same duct that forms the sperm duct. The oviduct, also known as the fallopian tube, develops from the Müllerian ducts, while the sperm duct, or vas deferens, develops from the Wolffian ducts. Therefore, the statement is false.

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  • 42. 

    If the oviduct is ligated, the egg cannot be fertilized or reach the uterus/womb 

    • A.

      True

    • B.

      False

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    A. True
    Explanation
    If the oviduct is ligated, it means that it is surgically closed or tied off, preventing the egg from being fertilized or reaching the uterus/womb. This is because the oviduct is the tube through which the egg travels from the ovary to the uterus, and if it is blocked or closed off, the egg cannot pass through and therefore cannot be fertilized or reach the uterus. Therefore, the statement "if the oviduct is ligated, the egg cannot be fertilized or reach the uterus/womb" is true.

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  • 43. 

    In the human ejaculate of 2.5 mil, if there are         million sperm or less a person is considered sterile 

    • A.

      50

    • B.

      100

    • C.

      200

    • D.

      20

    Correct Answer
    D. 20
    Explanation
    If a person's ejaculate contains 2.5 million sperm or less, they are considered sterile. The given answer of 20 suggests that if there are only 20 million sperm or less in the ejaculate, the person is considered sterile.

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  • 44. 

    In men when the supply of sperm is adequate which hormone is produced to stop more sperm from being made?

    • A.

      Estrogen

    • B.

      FSH

    • C.

      LH

    • D.

      Inhibin

    Correct Answer
    D. Inhibin
    Explanation
    In men, when the supply of sperm is adequate, the hormone inhibin is produced to stop more sperm from being made. Inhibin acts as a negative feedback signal to the pituitary gland, reducing the secretion of follicle-stimulating hormone (FSH). FSH is responsible for stimulating the production of sperm in the testes. By decreasing FSH levels, inhibin helps regulate the production of sperm and maintain a balance in the reproductive system.

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  • 45. 

    The egg must be fertilized before ovulation

    • A.

      True

    • B.

      False

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    B. False
    Explanation
    The statement "the egg must be fertilized before ovulation" is false. Ovulation is the release of an egg from the ovary, and fertilization occurs when the egg is fertilized by a sperm. In the human reproductive system, fertilization typically occurs in the fallopian tubes after ovulation. Therefore, fertilization does not need to occur before ovulation.

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  • 46. 

    Which of the following will give males trouble as they age?

    • A.

      Corpora cavernosa

    • B.

      Corpora spongiosum

    • C.

      Prostate gland

    • D.

      Cowpers gland

    Correct Answer
    C. Prostate gland
    Explanation
    As males age, the prostate gland can cause trouble. The prostate gland is a small gland located below the bladder and in front of the rectum. It is responsible for producing fluid that nourishes and protects sperm. However, as men age, the prostate gland can enlarge and lead to a condition called benign prostatic hyperplasia (BPH). This can cause urinary problems such as frequent urination, difficulty starting and stopping urination, weak urine flow, and the feeling of incomplete bladder emptying. In some cases, BPH can also lead to more serious complications like urinary tract infections and bladder stones.

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  • 47. 

    Which one do you like?

    • A.

      Option 1

    • B.

      Option 2

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    A. Option 1
    Explanation
    The explanation for the answer cannot be generated as the question does not provide any context or criteria for selecting a preference.

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  • 48. 

    Which one do you like?

    • A.

      Option 1

    • B.

      Option 2

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    A. Option 1
    Explanation
    The explanation for why Option 1 is the correct answer is not available as the question does not provide any context or criteria for determining a preference.

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  • 49. 

    Which one do you like?

    • A.

      Option 1

    • B.

      Option 2

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    A. Option 1
  • 50. 

    Which one do you like?

    • A.

      Option 1

    • B.

      Option 2

    • C.

      Option 3

    • D.

      Option 4

    Correct Answer
    A. Option 1

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 08, 2013
    Quiz Created by
    Jdav76
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