BIO_105_Test 3_

BIO_105_Test 3_ - 1. MC Pig If a skin cell in a pig (Sus...

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1. MC Pig   If a skin cell in a pig (Sus scrofa) has 54 chromosomes, a sperm cell in a pig would contain ___  chromosomes.   Student  Response Value Correct Answer Feedback 1.  13.5 0%      2.  54 0%      3. 27 100%      4.  108 0%      General  Feedback: Sperm cells are produced in animals by meiosis, which reduces the number of  chromosomes by one-half, in this case to 27. Score: 2/2    2. MC homologous
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  Two chromosomes are homologous. The chromosomes of this pair:   Student  Response Value Correct  Answer Feedback 1.  are linked to  each other. 0%      2.  contain only  RNA and no  DNA. 0%      3. must both  originate from  the mother. 0%      4.  are defective  chromosomes  that cause  genetic disease. 0%      5.  segregate  independently  during meiosis. 100%      Score: 0/2    3. MC diploid a
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  The diploid (2 sets of chromosomes) phase of the human life cycle begins with:   Student  Response Value Correct  Answer Feedback 1. mitosis. 0%      2.  fertilization.  100%      3.  meiosis. 0%      4.  a chromosomal  mutation.  0%      General  Feedback: Fertilization unites two haploid cells to form a diploid cell, the zygote and begin the  diploid phase of the life cycle. Score: 0/2    4. MC mitosis a   Which of the following is NOT a function of mitosis in humans?    Student  Response Value Correct  Answer Feedback 1.  production of  sperm 0%      2.  sexual  reproduction 0%      3.  forming eggs 0%      4.  growth 0%      5. 1, 2, and 3 are  correct 100%      General  Feedback: Mitosis functions in growth and replacement of cells in humans. Sexual  reproduction with production of eggs and sperm occurs due to meiosis. Score: 2/2    5. MC cell cycle a
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  Stomach epithelial (lining) cells divide frequently to replace lost cells. This means that, in the  cell cycle, they:   Student  Response Value Correct AnswerFeedback 1.  do not enter  the S phase. 0%      2.  do not enter  the G-2  phase. 0%      3. often enter  into an  irreversible  transition  from the G-1  phase to the  S phase. 100%      4.  1 and 2 are  correct. 0%      General  Feedback: In the cell cycle, cells that divide irreversibly transition from G-1 to S. Score: 2/2    6. MC Crossing Over
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  Crossing over results in:    Student  Response Value Correct  Answer Feedback 1.  prophase of  mitosis. 0%      2.  the  chromosomes  dying. 0%      3. an exchange of  genetic material  between  chromatids.  100%      4.  the attachment  of the spindle  fibers to the  chromosomes. 0%
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This note was uploaded on 03/20/2008 for the course BIO 105 taught by Professor Mickle during the Fall '07 term at N.C. State.

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BIO_105_Test 3_ - 1. MC Pig If a skin cell in a pig (Sus...

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