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Biology Exam-4 Chapter 27

32 Questions
Biology Quizzes & Trivia

To help me preparefor final

Questions and Answers
  • 1. 
    Between 1980 and 2003, the rate of multiple births in the United States rose by 87%, primarily as a result of
    • A. 

      A rise in the quality of prenatal care.

    • B. 

      Increased exposure to new sources of radiation.

    • C. 

      C) better physical condition of potential mothers.

    • D. 

      Increased use of fertility drugs.

    • E. 

      Better nutrition available for potential mothers.

  • 2. 
    Which of the following statements best characterizes asexual reproduction?
    • A. 

      It allows animals that do not move around to produce offspring without finding mates.

    • B. 

      Offspring without finding mates. B) It allows an animal to produce many offspring quickly

    • C. 

      It produces genetically uniform populations

    • D. 

      It allows a population to expand quickly to exploit available resources.

    • E. 

      It saves the time and energy required to produce gametes.

  • 3. 
    Which of the following statements regarding sexual reproduction is true?
    • A. 

      Sexual reproduction allows animals to expand their populations faster than asexual reproduction

    • B. 

      Populations of organisms that reproduce through sexual reproduction generally have difficulty adapting to changing environments.

    • C. 

      Sexual reproduction produces 2n gametes.

    • D. 

      Sexual reproduction generates greater genetic variation than asexual reproduction.

    • E. 

      Sexual reproduction creates an individual that is a genetic copy of one parent.

  • 4. 
    Hermaphrodites are animals that
    • A. 

      Must fertilize themselves

    • B. 

      Have abnormal reproductive systems

    • C. 

      Possess both male and female reproductive systems.

    • D. 

      Develop from unfertilized eggs.

    • E. 

      Have the gonads of one sex but the external appearance of the other.

  • 5. 
    Reproductive systems with external fertilization are most common in
    • A. 

      Animals that are widely dispersed

    • B. 

      Populations with many more females than males.

    • C. 

      Populations with many more males than females

    • D. 

      Terrestrial animals

    • E. 

      Aquatic animals

  • 6. 
    Which of the following statements about the reproductive system of human females is true?
    • A. 

      The corpus luteum secretes progesterone, which helps maintain the uterine lining during pregnancy

    • B. 

      The labia minora are a pair of thick, fatty ridges that protect the entire genital region.

    • C. 

      The cervix is an important structure of sexual arousal

    • D. 

      In human females, eggs develop within the uterus.

    • E. 

      After 9 months of development, an embryo is called a fetus.

  • 7. 
    The human egg is swept through the oviduct toward the uterus by
    • A. 

      Rhythmic contractions of the uterus

    • B. 

      Rhythmic contractions of the oviduct

    • C. 

      The beating of the eggʹs flagella

    • D. 

      The beating of the eggʹs cilia

    • E. 

      The beating of cilia in the oviduct

  • 8. 
    Fertilization in the female reproductive tract most often takes place in the
    • A. 

      Uterus

    • B. 

      Ovary.

    • C. 

      Upper third of the oviduct.

    • D. 

      Lower third of the oviduct.

    • E. 

      Vagina.

  • 9. 
    The embryo implants in the ________ of the uterus
    • A. 

      Myometrium

    • B. 

      Exometrium

    • C. 

      Perimetrium

    • D. 

      Endometrium

    • E. 

      Epimetrium

  • 10. 
    Human testes are positioned in an external sac rather than in the abdominal cavity
    • A. 

      So the testes can be kept away from the urinary bladder

    • B. 

      To shorten the distance that semen must travel during ejaculation

    • C. 

      To shorten the distance that sperm must swim during insemination

    • D. 

      So the testes can enlarge during sexual maturation

    • E. 

      So the testes can be kept cooler than the bodyʹs interior

  • 11. 
    Men who take very long, hot baths are likely to
    • A. 

      Produce healthier sperm

    • B. 

      Produce more sperm

    • C. 

      Produce fewer sperm

    • D. 

      Produce more sperm and ones that are healthier.

    • E. 

      Produce nonfunctional sperm.

  • 12. 
    After being produced in the testes, sperm mature further in a structure called the
    • A. 

      Epididymis

    • B. 

      Seminal vesicle

    • C. 

      Vas deferens

    • D. 

      Bulbourenthral gland

    • E. 

      Prostate

  • 13. 
    Which of the following produces a thick fluid containing fructose, which is used for energy by sperm?
    • A. 

      Seminal vesicles

    • B. 

      Vas deferens

    • C. 

      Bulbourethral gland

    • D. 

      Prostate gland

    • E. 

      Epididymis

  • 14. 
    Which of the following statements regarding spermatogenesis and oogenesis is true?
    • A. 

      Spermatogenesis begins at birth

    • B. 

      Meiosis in spermatogenesis produces two cells from one primary spermatocyte

    • C. 

      Oogenesis is not completed without stimulation by estrogen.

    • D. 

      Meiosis in oogenesis produces one mature egg from one primary oocyte

    • E. 

      Oogenesis begins at puberty

  • 15. 
    Which of the following statements comparing spermatogenesis and oogenesis is true
    • A. 

      During oogenesis, there is a resting period that lasts for about 30 days

    • B. 

      Spermatogenesis, but not oogenesis, is an example of gametogenesis

    • C. 

      Spermatogenesis and oogenesis rely upon mitosis to produce gametes

    • D. 

      Men, but not women, can produce gametes throughout their lives.

    • E. 

      During oogenesis, four cells are produced with each sharing equally the cytoplasm from the parent cell.

  • 16. 
    Menstruation
    • A. 

      Is triggered by HCG

    • B. 

      Is triggered by an increase in the levels of estrogen and progesterone.

    • C. 

      Is triggered by an LH surge.

    • D. 

      Coincides with the postovulatory phase of the ovarian cycle.

    • E. 

      Coincides with the beginning of the pre-ovulatory phase of the ovarian cycle.

  • 17. 
    In human females, the ovarian cycle begins when
    • A. 

      The level of progesterone drops precipitously

    • B. 

      The levels of estrogen reach their maximum

    • C. 

      The hypothalamus increases its release of FSH and LH.

    • D. 

      The hypothalamus stimulates the anterior pituitary to increase its output of FSH and LH.

    • E. 

      The levels of FSH and LH drop precipitously

  • 18. 
    Which of the following hormones stimulates the growth of an ovarian follicle
    • A. 

      Releasing hormone

    • B. 

      FSH

    • C. 

      Estrogen

    • D. 

      Progesterone

    • E. 

      LH

  • 19. 
    A decrease in ________ is followed by the gradual degradation of the corpus luteum
    • A. 

      Releasing hormone

    • B. 

      Estrogen

    • C. 

      Progesterone

    • D. 

      FSH

    • E. 

      LH

  • 20. 
    Which of the following types of pathogens cause sexually transmitted diseases that cannot be treated with antibiotics?
    • A. 

      Viruses

    • B. 

      Syndromes

    • C. 

      Spriaochetes

    • D. 

      Bacteria

    • E. 

      Fungi

  • 21. 
    Which of the following STDs is caused by a virus that can also cause cancer?
    • A. 

      Candidiasis

    • B. 

      Gonorrhea

    • C. 

      Syphilis

    • D. 

      Trichomoniasis

    • E. 

      Genital warts

  • 22. 
    The only totally effective way to prevent the spread of STDs is through
    • A. 

      Using birth control pills

    • B. 

      Using a diaphragm and spermicide

    • C. 

      Using condoms.

    • D. 

      Abstaining from sexual intercourse

    • E. 

      Using condoms and spermicides

  • 23. 
    Sterilization, in which the sperm is surgically prevented from reaching the egg, is accomplished by
    • A. 

      MAPs.

    • B. 

      Cervical capping

    • C. 

      Vasectomy.

    • D. 

      Mifepristone.

    • E. 

      The rhythm method.

  • 24. 
    Which of the following statements regarding birth control is true?
    • A. 

      Natural family planning is generally reliable.

    • B. 

      Morning-after pills taken within three days of unprotected intercourse prevent fertilization or implantation about 75% of the time.

    • C. 

      Birth control pills work primarily by preventing fertilization and implantation.

    • D. 

      Spermicides used alone are generally reliable.

    • E. 

      The most widely used birth control pills contain a combination of FSH and LH

  • 25. 
    Which of the following generates the ATP that is required for movement of the spermʹs tail?
    • A. 

      Mitochondria in the sperm tail

    • B. 

      The sperm plasma membrane

    • C. 

      Mitochondria in the sperm head

    • D. 

      Mitochondria in the neck and middle piece

    • E. 

      The acrosome

  • 26. 
    Fertilization
    • A. 

      Activates development in the egg.

    • B. 

      Joins two diploid sets of chromosomes and activates development in the egg

    • C. 

      Joins two diploid sets of chromosomes

    • D. 

      Joins two haploid sets of chromosomes

    • E. 

      Joins two haploid sets of chromosomes and activates development in the egg.

  • 27. 
    Which of the following events occurs first during embryonic development
    • A. 

      Neurulation

    • B. 

      Cleavage

    • C. 

      Aggregation

    • D. 

      Implantation

    • E. 

      Gastrulation

  • 28. 
    Which of the following results from cleavage
    • A. 

      Formation of more cells

    • B. 

      Formation of the nervous system

    • C. 

      Segmentation

    • D. 

      Formation of the digestive system

    • E. 

      Formation of the notochord

  • 29. 
    Which of the following processes is most similar to the process of cleavage?
    • A. 

      Slicing up a pie into eight pieces

    • B. 

      Inflating a balloon

    • C. 

      Stringing beads onto a string

    • D. 

      Stretching a rubber band

    • E. 

      Melting a stick of butter in a hot pan

  • 30. 
    Two important contributions that cleavage makes to development are to
    • A. 

      Establish the basic tissues of the body and define the future digestive tract

    • B. 

      Create a multicellular embryo and establish the basic tissues of the body.

    • C. 

      Create a multicellular embryo and partition the embryo into developmental regions

    • D. 

      Establish the basic tissues of the body and define the future nervous system

    • E. 

      Establish the basic body plan and determine the location of the mouth and anus.

  • 31. 
    The ectoderm is one of the embryonic tissue layers produced during gastrulation that forms the
    • A. 

      Embryonic nervous system.

    • B. 

      Space between the ectoderm and endoderm

    • C. 

      Brain.

    • D. 

      Outer layer of the gastrula

    • E. 

      Embryonic digestive tract.

  • 32. 
    What occurs during gastrulation
    • A. 

      A solid embryo is changed into a hollow morula.

    • B. 

      A hollow blastula is changed into a hollow embryo that has three tissue layers

    • C. 

      A notochord is created by invagination of the ectoderm.

    • D. 

      A solid blastula is changed into a hollow embryo that has four tissue layers

    • E. 

      A neural tube is created by invagination of the ectoderm