Biomed 100 Practice Quiz
Chapter 19, Spring 2007
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  1. Which statement is true of meiosis in humans?
    1. reduces number of chromosomes from 46 to 23
      2.
    2. occurs in any tissue that contains stem cells
    3. both of the above
    4. none of the above

  2. Given the following key:
    1 = nucleus with chromosomes
    2 = mitochondria that produce ATP
    3 = acrosome with enzymes
    4 = flagellum with sliding microtubules
    Which one of the following is in the correct sequence, starting with the "front" of a swimming sperm cell?
    1. 1-2-3-4
    2. 2-1-3-4
    3. 2-3-1-4
    4. 3-1-2-4
      5.
    5. 4-1-2-3

  3. After being produced in a testis, sperm are transported to the _?_ where they are stored and allowed to mature.
    1. epididymis
      2.
    2. prostate gland
    3. seminal vesicle
    4. seminiferous tubules

  4. The hormones known as follicle-stimulating hormone and luteinizing hormone...
    1. are classified as gonadotropins
      2.
    2. are produced by the testes
    3. are not present in males
    4. both A. and B.
    5. both A. and C.

  5. Of the following passages through which sperm travel in the body of a male, the longest is the...
    1. urethra
    2. vas deferens
      3.
    3. ejaculatory duct

  6. The greatest percentage of the semen volume is produced by the...
    1. testes
    2. prostate gland
    3. seminal vesicles
      4.
    4. erectile bodies of the penis

  7. What is the importance of the "secondary oocyte?"
    1. It produces gonadotropins.
    2. Prior to ovulation, it produces estrogens.
    3. After ovulation, it produces progesterone.
    4. If fertilization occurs, it gives rise to the ovum ("egg").
      5.

  8. In a typical reproductive cycle, ovulation occurs _?_ as a result of _?_.
    1. at the beginning of the first week / releasing hormones from the hypothalamus
    2. at the end of the first week / increasing estrogens from the follicle
    3. at the end of the second week / a dramatic increase in hormones from the pituitary gland
      4.
    4. at the end of the third week / increasing progesterone from the corpus luteum
    5. at the end of the fourth week / decreasing progesterone from the corpus luteum

  9. In a woman who is not pregnant, menstruation may be considered a direct result of...
    1. increasing human chorionic gonadotropin (hCG)
    2. increasing gonadotropins other than hCG
    3. increasing progesterone
    4. decreasing progesterone
      5.

  10. How does meiosis in females differ from meiosis in males?
    1. different number of functional daughter cells produced (one instead of four)
      2.
    2. different number of chromosomes per functional daughter cell (46 instead of 23)