The Unbeatable Quiz On Bio 113 Test

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Biology Quizzes & Trivia

A cell is a smallest unit of life an always termed as building blocks. Cells contain cytoplasm enclosed within a membrane. Organisms can be defined as unicellular if it has a single cell or multicellular such as plants and animals. The Unbeatable Quiz on Bio 113 test below widens your understanding on cells and its components. Try it out.


Questions and Answers
  • 1. 

    How many chromosomes do eggs and sperm contain?

    Explanation
    Eggs and sperm contain 23 chromosomes each. During fertilization, when an egg and sperm combine, the resulting embryo will have a total of 46 chromosomes, with 23 coming from the mother's egg and 23 from the father's sperm. This combination of chromosomes determines the genetic makeup and characteristics of the individual.

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  • 2. 

    How many chromosomes are in somatic cells?

  • 3. 

    What is the fusion of egg and sperm called?

    Explanation
    The fusion of an egg and sperm is called a zygote. This occurs during fertilization when the genetic material from both the egg and sperm combine to form a single cell. The zygote is the earliest stage of development in a new organism and contains all the genetic information necessary for growth and development.

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  • 4. 

    What does Meosis do?

  • 5. 

    How many sets of chromosomes are in diploid cells?

    Explanation
    Diploid cells have two sets of chromosomes. In humans, each diploid cell contains 46 chromosomes, with 23 chromosomes inherited from each parent. This ensures that offspring receive a complete set of genetic information. The presence of two sets of chromosomes allows for genetic diversity and the ability to undergo processes like meiosis and sexual reproduction.

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  • 6. 

    Diploid cells are:

    Explanation
    Diploid cells refer to cells that contain two complete sets of chromosomes, one set inherited from each parent. These cells are commonly found in the body tissues and are responsible for various functions, such as growth, repair, and maintenance of the body. Therefore, the correct answer is "Body cells."

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  • 7. 

    Haploid cells are:

    Explanation
    Haploid cells refer to cells that contain only one set of chromosomes, which is half the number of chromosomes found in diploid cells. Sex cells, also known as gametes, are haploid cells that are involved in sexual reproduction, such as sperm cells in males and egg cells in females. These cells combine during fertilization to form a diploid zygote, which then develops into a new organism. Therefore, the answer "sex cells" accurately describes haploid cells as they are specifically involved in sexual reproduction.

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  • 8. 

    What is sexual reproduction?

    Explanation
    Sexual reproduction is a process in which two parent organisms contribute genetic material to produce offspring. Meiosis is a type of cell division that occurs in the reproductive cells, such as eggs and sperm, which reduces the number of chromosomes in half. Fertilization is the fusion of the male and female gametes, resulting in the combination of their genetic material to form a new individual. Therefore, meiosis and fertilization are both essential processes in sexual reproduction as they ensure genetic diversity and the creation of genetically unique offspring.

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  • 9. 

    What is the difference between meosis and mitosis?

  • 10. 

    What is the exchange process called in synapis?

    Explanation
    Crossing over is the exchange process that occurs during synapsis. It involves the swapping of genetic material between homologous chromosomes, resulting in the recombination of genes. This process increases genetic diversity and plays a crucial role in evolution. During crossing over, sections of DNA break and rejoin, leading to the exchange of genetic information between chromosomes. This phenomenon helps to create new combinations of alleles and contributes to genetic variation within a population.

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  • 11. 

    Sister chromatids are identical in reduction division.

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Sister chromatids are not identical in reduction division. Reduction division, also known as meiosis, is a type of cell division that occurs in the production of gametes (sperm and eggs). During meiosis, sister chromatids separate and are distributed into different cells, resulting in genetic variation. This process is essential for sexual reproduction and the creation of genetically diverse offspring. Therefore, the statement that sister chromatids are identical in reduction division is false.

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  • 12. 

    What happens during phophase 1 of meiosis?

  • 13. 

    What are teh 5 stages of synapis and what do they do?

  • 14. 

    Diploid organisms use meosis for the development of gametes. Meiosis consist of how many rounds of nuclear division?

    • A.

      One

    • B.

      Two

    • C.

      Three

    • D.

      Four

    • E.

      None of these

    Correct Answer
    B. Two
    Explanation
    Meiosis consists of two rounds of nuclear division. During the first round, called meiosis I, the chromosomes in the diploid cell pair up and exchange genetic material through a process called crossing over. This results in the formation of two daughter cells, each with half the number of chromosomes as the original cell. In the second round, called meiosis II, these daughter cells divide again, resulting in the formation of four haploid gametes with a single set of chromosomes. Therefore, the correct answer is two.

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  • 15. 

    The only mammals that lay eggs are called

    • A.

      Monotremes

    • B.

      Placentals

    • C.

      Marsupials

    Correct Answer
    A. Monotremes
    Explanation
    Monotremes are the correct answer because they are the only group of mammals that lay eggs. Monotremes include the platypus and echidna, which have unique reproductive systems that involve laying eggs instead of giving live birth like placental and marsupial mammals. This adaptation is a distinguishing feature of monotremes, making them distinct from other mammals.

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  • 16. 

    In humans, which embryonic tissues are indifferent.

    • A.

      Vertebral columns

    • B.

      Brain stems

    • C.

      Adrenal glands

    • D.

      Spinal cords

    • E.

      Gonads

    Correct Answer(s)
    A. Vertebral columns
    E. Gonads
    Explanation
    During embryonic development in humans, certain tissues are initially undifferentiated or indifferent, meaning they have not yet developed into specific structures or organs. The vertebral columns and gonads are examples of such tissues. The vertebral columns eventually differentiate into the bones of the spinal column, while the gonads differentiate into either testes or ovaries. The brain stems, adrenal glands, and spinal cords, on the other hand, are not considered indifferent tissues as they have specific structures and functions from the beginning of development.

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  • 17. 

    Mammals that retain their young for a long period of development within the mother's uterus are:

    • A.

      Monotremes

    • B.

      Placentals

    • C.

      Marsupials

    Correct Answer
    B. Placentals
    Explanation
    Placentals are mammals that retain their young for a long period of development within the mother's uterus. Unlike monotremes, which lay eggs and have a short gestation period, and marsupials, which give birth to relatively undeveloped young that continue to develop outside the uterus, placentals have a complex placenta that allows for a longer period of nourishment and development inside the mother's body. This is why placentals are the correct answer to the question.

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  • 18. 

    An adult male produces sprm continuously by meotic division of the germinal cells lining the:

    • A.

      Malpighian tubules

    • B.

      Fallopian tubules

    • C.

      Seminiferous tubules

    • D.

      Epididymis tubules

    • E.

      Vas deferens tubules

    Correct Answer
    C. Seminiferous tubules
    Explanation
    The correct answer is seminiferous tubules. These tubules are found in the testes and are responsible for the production of sperm through meiotic division of germinal cells.

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  • 19. 

    This process is absent in mammals with an estrous cycle

    • A.

      Oogenesis

    • B.

      Homeostasis

    • C.

      Ovulation

    • D.

      Menstruations

    • E.

      Placenta formation

    Correct Answer
    A. Oogenesis
    Explanation
    Oogenesis is the process of egg cell formation in females. It involves the development and maturation of ova (eggs) in the ovaries. This process occurs in mammals with an estrous cycle, where females experience a period of receptivity to mating, but not in mammals with a menstrual cycle, where females experience regular menstruation. Therefore, oogenesis is absent in mammals with an estrous cycle.

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  • 20. 

    Metamorphosis is a feature of

    • A.

      Amphibians

    • B.

      Mammals

    • C.

      Fish

    • D.

      Reptiles

    • E.

      Vertabrates

    Correct Answer
    A. Amphibians
    Explanation
    Metamorphosis is a process of transformation in an organism's life cycle where it undergoes significant physical changes. Amphibians, such as frogs and salamanders, exhibit metamorphosis as they transition from aquatic larvae to terrestrial adults. They undergo a series of developmental stages, including the transformation of gills to lungs, the growth of limbs, and the development of a fully functional digestive system. This process allows them to adapt to different environments and lifestyles. Therefore, amphibians are the correct answer as they are the group of vertebrates known for their distinct metamorphosis.

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  • 21. 

    An organism in which internally-fertilized eggs are laid to develop and hatch outside the mother's body is:

    • A.

      Placental

    • B.

      Viviparous

    • C.

      Oviparous

    • D.

      Marsupial

    • E.

      Ovoviviparous

    Correct Answer
    C. Oviparous
    Explanation
    An organism that lays internally-fertilized eggs to develop and hatch outside the mother's body is referred to as oviparous. In this reproductive strategy, the eggs are fertilized internally but are then laid outside the mother's body to develop and hatch independently. This is a common method of reproduction in many species, including reptiles, birds, and some insects.

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  • 22. 

    You notice that in your aquarium full of undoubtedly male fish, one is laying eggs. Upon a bit of research, you find out that the species of fish you purchased is sequential hermaphrodite. Whichof the following is true?

    • A.

      One of the male fish underwent protandry

    • B.

      One of the male fish fertilized its own eggs

    • C.

      Since the fish are hermaphrodites, ofne of the male fish laid eggs and another will likely fertilize them.

    • D.

      The fish shoe parthenogenesis therefore their eggs do not have to be fertilized to be viable.

    • E.

      The fish show protogyny, which allows the male to lay eggs.

    Correct Answer
    A. One of the male fish underwent protandry
    Explanation
    Protandry is a type of sequential hermaphroditism where an individual starts off as a male and later changes into a female. In this case, since one of the male fish is laying eggs, it indicates that it has undergone protandry and changed its sex from male to female.

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  • 23. 

    Eukaryotic chromosomes are composed of a complex of 60% protein and 40% DNA. The name of this chemical complex is a:

    • A.

      Histone complex

    • B.

      Chromatin

    • C.

      Histamine complex

    • D.

      Chromatid

    • E.

      Centromere

    Correct Answer
    B. Chromatin
    Explanation
    Chromatin is the correct answer because it accurately describes the chemical complex found in eukaryotic chromosomes. Chromatin is composed of approximately 60% protein and 40% DNA, making it the correct choice. Histone complex, histamine complex, chromatid, and centromere are not accurate descriptions of the chemical complex found in eukaryotic chromosomes.

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  • 24. 

    If a eukaryotic cells has a single set of chromosomes, it is called

    • A.

      Haploid

    • B.

      Diploid

    • C.

      Polypoid

    Correct Answer
    A. Haploid
    Explanation
    A eukaryotic cell with a single set of chromosomes is called haploid. In haploid cells, each chromosome is present in only one copy. This is in contrast to diploid cells, which have two sets of chromosomes, and polyploid cells, which have more than two sets of chromosomes. Haploid cells are typically found in gametes, such as sperm and eggs, which combine during fertilization to form a diploid zygote.

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  • 25. 

    The physical map of the array of chromosomes is called a(n)

    • A.

      Ecotype

    • B.

      Haplotype

    • C.

      Karyotype

    • D.

      Phenotype

    • E.

      Genotype

    Correct Answer
    C. Karyotype
    Explanation
    A karyotype refers to the physical map of the array of chromosomes in an organism. It provides a visual representation of the chromosomes, including their number, size, and structure. By examining the karyotype, scientists can identify any chromosomal abnormalities or genetic disorders. Therefore, karyotype is the correct answer as it specifically relates to the physical map of chromosomes.

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  • 26. 

    The physical distribution of cytoplasmic material into the two daughter cells is called:

    • A.

      DNA replication

    • B.

      Mitosis

    • C.

      Cytokinesis

    • D.

      Binary fission

    Correct Answer
    C. Cytokinesis
    Explanation
    Cytokinesis is the correct answer because it refers to the process of dividing the cytoplasmic material into two daughter cells. This process occurs after mitosis, which is the division of the nucleus, and is essential for the completion of cell division. DNA replication is the process of copying the DNA molecule, while binary fission is a type of cell division specific to prokaryotic organisms.

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  • 27. 

    Which of the following cell functions are maintained by cell division?

    • A.

      Growth and reproduction

    • B.

      Death

    • C.

      Metabolism

    • D.

      Movement

    • E.

      Organization

    Correct Answer
    A. Growth and reproduction
    Explanation
    Cell division is a fundamental process that allows cells to grow and reproduce. During cell division, a single cell divides into two daughter cells, each containing a complete set of genetic material. This process ensures the growth and development of multicellular organisms by increasing the number of cells. Additionally, cell division is essential for reproduction, as it allows for the production of gametes (sperm and eggs) that can combine to form a new individual. Therefore, growth and reproduction are maintained by cell division. Death, metabolism, movement, and organization are not directly dependent on cell division.

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  • 28. 

    The number of chromosomes characteristic of eukaryoties, in general,

    • A.

      Can usually be determined without the use of a microscope

    • B.

      Can usually be predicted from the size of the organism

    • C.

      Changes as the organism grows

    • D.

      Vary considerably from 2 to over 1000 in a different species

    • E.

      Vary depending on the type of cell in the same organism

    Correct Answer
    D. Vary considerably from 2 to over 1000 in a different species
    Explanation
    The correct answer is "vary considerably from 2 to over 1000 in a different species." This is because the number of chromosomes in eukaryotes can vary greatly across different species. Some organisms may have as few as 2 chromosomes, while others may have over 1000. This variation in chromosome number is due to the differences in genetic complexity and evolutionary history among different species.

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  • 29. 

    Some of the portions of the chromatin are permanently condensed so that their DNA is never expressed. All of these portions stein very intensely and are given a common name of:

    • A.

      DNA dark bands

    • B.

      Euchrochromatin

    • C.

      Heterochromatin

    • D.

      Genome

    • E.

      Haploid DNA

    Correct Answer
    C. Heterochromatin
    Explanation
    Heterochromatin refers to the portions of chromatin that are permanently condensed and their DNA is not expressed. It appears as dark bands under a microscope. This is in contrast to euchromatin, which is the loosely packed and active form of chromatin where DNA is accessible for gene expression. The term genome refers to the complete set of genetic material in an organism, while haploid DNA refers to the DNA content in a cell or organism that has only one set of chromosomes. Therefore, heterochromatin is the correct answer as it specifically describes the condensed and inactive portions of chromatin.

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  • 30. 

    In the human, the body cells contain two sets of chromosomes totaling:

    • A.

      2

    • B.

      22

    • C.

      44

    • D.

      46

    • E.

      23

    Correct Answer
    D. 46
    Explanation
    In humans, the body cells contain two sets of chromosomes, one set inherited from the mother and the other from the father. Each set consists of 23 chromosomes, resulting in a total of 46 chromosomes in the body cells. This is the correct answer because it accurately reflects the chromosomal composition in human cells.

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  • 31. 

    Before cell division of the body cells, each homologus replicates into two parts. These parts are connected by a centromere and are called:

    • A.

      Sister chromatids

    • B.

      Daughter chromatids

    • C.

      Sister chromosomes

    • D.

      Daughter chromosomes

    • E.

      Genes

    Correct Answer
    A. Sister chromatids
    Explanation
    Before cell division, each homologous chromosome replicates into two identical copies called sister chromatids. These sister chromatids are connected by a centromere and contain the same genes. During cell division, the sister chromatids separate and are distributed to each daughter cell, ensuring that each new cell receives a complete set of genetic information. Therefore, the correct answer is sister chromatids.

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  • 32. 

    Which of the following sequence of cell-cycle phases is characteristic of eukaryotes:

    • A.

      G to S to M

    • B.

      G1 to S to G2 to M to C

    • C.

      S to M to C

    • D.

      G1 to G2 to S to C

    • E.

      G1 to G2 to G3 to S to C

    Correct Answer
    B. G1 to S to G2 to M to C
    Explanation
    The correct answer is G1 to S to G2 to M to C. This sequence of cell-cycle phases is characteristic of eukaryotes. In the G1 phase, the cell grows and prepares for DNA replication. In the S phase, DNA replication occurs. In the G2 phase, the cell continues to grow and prepares for cell division. In the M phase, mitosis occurs, which is the division of the cell's nucleus. Finally, in the C phase, cytokinesis occurs, which is the division of the cytoplasm to form two daughter cells.

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  • 33. 

    The phase of the cell cycle during which the cytoplasm divides to form two cells is:

    • A.

      G1

    • B.

      S

    • C.

      M

    • D.

      C

    • E.

      G2

    Correct Answer
    D. C
    Explanation
    The correct answer is C. The phase of the cell cycle during which the cytoplasm divides to form two cells is M phase, also known as mitosis. During this phase, the genetic material is evenly distributed between two daughter cells, and the cytoplasm divides, resulting in the formation of two separate cells. G1 phase is the first gap phase where the cell grows and prepares for DNA replication. S phase is the synthesis phase where DNA replication occurs. G2 phase is the second gap phase where the cell continues to grow and prepares for cell division.

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  • 34. 

    The chromosomes line up at the spindle during:

    • A.

      Anaphase

    • B.

      Interphase

    • C.

      Metaphase

    • D.

      Prophase

    • E.

      Telophase

    Correct Answer
    C. Metaphase
    Explanation
    During metaphase, the chromosomes align themselves along the equatorial plane of the cell, known as the metaphase plate. This alignment is facilitated by the spindle fibers, which attach to the centromere region of each chromosome. This arrangement ensures that each daughter cell will receive the correct number and type of chromosomes during cell division.

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  • 35. 

    The attachment of which molecules is critical for the proper seperation of sister chromatids:

    • A.

      Chromosomes

    • B.

      Asters

    • C.

      Microtubules

    • D.

      Cyclins

    • E.

      Protein kinases

    Correct Answer
    C. Microtubules
    Explanation
    Microtubules are responsible for the proper separation of sister chromatids during cell division. They form the mitotic spindle, which attaches to the kinetochores of the sister chromatids and pulls them apart towards opposite poles of the cell. Without the attachment of microtubules, the sister chromatids would not be able to properly separate, leading to errors in chromosome distribution and potentially causing genetic abnormalities.

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  • 36. 

    Microtubules become shorter, pulling chromatids to the ends of the spindle, during

    • A.

      Anaphase

    • B.

      Interphase

    • C.

      Metaphase

    • D.

      Prophase

    • E.

      Telophase

    Correct Answer
    A. Anaphase
    Explanation
    During anaphase, microtubules become shorter and contract, exerting a pulling force on the chromatids. This contraction causes the chromatids to separate and move towards opposite ends of the spindle, ensuring that each daughter cell receives a complete set of chromosomes during cell division.

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  • 37. 

    Which of the following is essentially the reverse of phophase?

    • A.

      Anaphase

    • B.

      Interphase

    • C.

      Metaphase

    • D.

      Telophase

    • E.

      Cytokinesis

    Correct Answer
    D. Telophase
    Explanation
    Telophase is essentially the reverse of prophase. During prophase, the genetic material condenses and the nuclear envelope breaks down, while in telophase, the genetic material decondenses and the nuclear envelope reforms. Additionally, during prophase, the spindle fibers form and attach to the chromosomes, while in telophase, the spindle fibers disassemble. Therefore, telophase is the correct answer as it represents the reverse of prophase in the cell cycle.

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  • 38. 

    The proteins that participate in the functioning of the checkpoings for cell cycle control are:

    • A.

      Microtubules

    • B.

      Asters

    • C.

      Histones

    • D.

      Cyclins and cyclin-dependent kinases

    • E.

      Channel proteins

    Correct Answer
    D. Cyclins and cyclin-dependent kinases
    Explanation
    Cyclins and cyclin-dependent kinases (CDKs) are proteins that play a crucial role in cell cycle control. Cyclins regulate the progression of the cell cycle by binding to CDKs and activating them. CDKs, in turn, phosphorylate target proteins, leading to the activation of various cell cycle checkpoints. These checkpoints ensure that the cell cycle proceeds accurately and that any errors or DNA damage are repaired before the cell continues to divide. Therefore, cyclins and CDKs are essential components that participate in the functioning of the checkpoints for cell cycle control.

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  • 39. 

    What is homologous?

  • 40. 

    What is analogous?

  • 41. 

    What do we call the process in which arthropods do "virgin birth"?

    Correct Answer
    parthenogenesis
    Explanation
    Parthenogenesis refers to the process in which arthropods reproduce through "virgin birth". In this process, females are able to produce offspring without the need for fertilization by a male. This can occur through various mechanisms such as the development of an unfertilized egg or the cloning of the female's genetic material. Parthenogenesis is a unique reproductive strategy that allows arthropods to reproduce and maintain their population without the involvement of males.

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  • 42. 

    Sexual reproduction first occurred where?

    Correct Answer
    water
    Explanation
    Sexual reproduction first occurred in water. This is because water provides a conducive environment for the movement and fusion of gametes. In aquatic environments, such as oceans and freshwater bodies, organisms release their gametes into the water, where they can freely move and encounter each other for fertilization to occur. This method allows for genetic diversity and the mixing of genes from different individuals, leading to the evolution of new traits and species. As organisms evolved and adapted to terrestrial environments, they developed various mechanisms to facilitate sexual reproduction outside of water.

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  • 43. 

    FSH and LH are produced in the:

    • A.

      Brain

    • B.

      Pituitary gland

    • C.

      Testes

    • D.

      Gonads

    Correct Answer
    B. Pituitary gland
    Explanation
    FSH (follicle-stimulating hormone) and LH (luteinizing hormone) are both produced in the pituitary gland. The pituitary gland is a small, pea-sized gland located at the base of the brain. It is often referred to as the "master gland" because it produces and releases various hormones that regulate many bodily functions, including the production of FSH and LH. FSH plays a crucial role in the development and maturation of eggs in females and sperm in males, while LH is responsible for triggering ovulation in females and the production of testosterone in males.

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  • 44. 

    What is the difference between aerobic, fermentation, and anaerobic respiration?

  • 45. 

    What is the balanced equation for cell respiration?

  • 46. 

    What are the stages of aerobic respiration and what do they do?

  • 47. 

    What are the stages in anaerobic respiration?

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  • Mar 18, 2023
    Quiz Edited by
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  • Nov 17, 2008
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