Exam 27: The Reproductive System

A) E
B) A
C) C
D) D
E) B

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A) be unable to produce viable sperm
B) be impotent (unable to have an erection)
C) have impaired function of interstitial cells
D) not develop secondary sex characteristics

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A) One is an undeveloped primary oocyte that failed to mature.
B) There were originally four polar bodies and one disappeared.
C) What you really see are two polar bodies and the sperm that will fertilize the egg.
D) The first polar body has also divided to produce two polar bodies.

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The female clitoris is homolog...

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A) Its effects are significant in meiosis and in mitosis.
B) It only occurs in meiosis II.
C) It is a significant source of genetic variation only during meiosis I.
D) It is a significant source of genetic variation that occurs in meiosis I and meiosis II.

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A) The hormones cause the woman's body to mimic the activities of a pregnancy and disrupt the ovarian cycle, preventing ovulation.
B) The hormones create an acid condition in the vagina that acts as a spermicide.
C) The hormones prevent the proliferative or secretory phase of the menstrual cycle and the embryo will have no place to implant.
D) The hormones cause a thickening of the mucus plug at the cervix that prevents sperm from penetrating the womb and reaching the ovulated egg.

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A) Meiosis
B) meiosis
C) Mitosis
D) mitosis

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A) the acrosome migrates towards the posterior end of the spermatid because its hydrolytic enzymes will be needed for digestion of the excessive cytoplasm around the flagella of the developing sperm
B) the acrosome migrates towards the anterior end of the spermatid because its hydrolytic enzymes will be needed for penetration when the sperm contacts the egg during fertilization
C) the acrosome migrates towards the anterior end of the spermatid because its pointy shape helps the sperm to move more efficiently
D) the acrosome migrates towards the posterior end of the spermatid because of its ability to propel the flagella moving the sperm through the female reproductive system towards the egg

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A) Joined homologous pair uniformly line up on the equatorial spindle with chromosome one at the top and chromosome 23 on the bottom.
B) Tetrads align randomly on the spindle equator with all the maternal homologs on one side and all the paternal homologs on the opposite side.
C) Homologous pairs align randomly on the spindle equator with a mix of paternal and maternal homologs destined for each of the daughter cells.
D) The sister chromatids line up randomly on the spindle equator with some maternal and paternal chromatids on both sides of the equator.

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A) C
B) B
C) A
D) D

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A) blood levels of estrogen and progesterone decrease
B) blood levels of FSH fall off
C) the corpus luteum secretes estrogen
D) blood levels of estrogen and progesterone increase

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A) Meiosis II is essential the same process as mitosis except the starting cells are haploid (n) .
B) Further genetic variation typically does not occur after meiosis I.
C) Crossing over is a source of genetic variability seen in meiosis while independent assortment is a source of genetic variability seen in mitosis.
D) Meiosis II is essential the same process as mitosis except the genetic material will not replicate before division takes place.

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A) E
B) A
C) C
D) D
E) B

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Megadoses of testosterone would inhibit ...

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A) results in the formation of diploid cells
B) is the process of releasing mature sperm cells into the lumen of the seminiferous tubule
C) involves a kind of cell division limited to the gametes
D) uses mitosis to produce gamete cells

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