Module 2 quiz questions and correct
answers
A 25 year-old man visits a urologist to investigate why he is unable to have children.
Semen analysis revealed round nonmotile sperm with a DNA content at n. The patient's
infertility is most likely due to a functional defect in which of the following? - correct
answers-spermiogenesis is the maturation of the spermatozoa.
A change in egg membrane potential due to an influx in Na+ ions is part of which of the
following? - correct answers-The fast block to polyspermy
A young man was given a chemotherapy drug that caused Sertoli cells to die. Which of
the following is most likely to result? - correct answers-Loss of all spermatic cells
All the cells of the embryo proper (all the cells in your body now) derive from which of
the following structures? - correct answers-Epiblast
At fertilization there is a series of Ca2+ (calcium) waves within the egg. Which of the
following occurs in the egg in response to these waves? - correct answers-Slow block to
polyspermy, degradation of CSF, and egg activation
Follicle stimulating hormone (FSH) stimulate the ____________ to _____________ and
secrete _____________. Fill in the blanks. - correct answers-Granulosa cells,
proliferate, estrogen
In the ovary, oocytes are held at diplotene of meiosis I at birth. How is the diplotene
block released? - correct answers-Progesterone activates c-Mos, which phosphorylates
maturation promotion factor (MPF).
Mammalian fertilization must occur ________________ . Fill in the blank with the
correct answer. - correct answers-the infundibulum of the oviduct or Fallopian tubes.
Mice were made that lacked the gene encoding ZP2 (Zp2-/-). How would you predict
that this would affect fertilization? - correct answers-It would block sperm binding to the
oocyte
Sea urchins release gametes into the ocean. Which of the following is a strategy
employed to direct sperm to eggs? - correct answers-Resact acts as a chemoattractant
to direct sperm motility towards the oocyte.
The acrosome reaction __________. Pick the best answer to finish the statement. -
correct answers-The acrosome reaction allows for a sperm to penetrate the jelly layer
by causing the release of enzymes which degrade the jelly layer around the egg.
The anterior visceral endoderm is important in axis formation and determines which end
of the embryo? - correct answers-Rostral
The diagram above describes an experiment done with 2 species of sea urchin.
Researchers removed the jelly coat from the eggs and incubated them with bindin
proteins from each species as diagrammed. Which of the following statements correctly
interprets these data? Ignore the E.M. image (A), the question is in reference to diagram
(B). - correct answers-The bindin molecules from one species will not cause
agglutination of the eggs of another.
What is the outcome of female mammalian meiosis? - correct answers-One haploid
germ cell and one to two polar bodies
answers
A 25 year-old man visits a urologist to investigate why he is unable to have children.
Semen analysis revealed round nonmotile sperm with a DNA content at n. The patient's
infertility is most likely due to a functional defect in which of the following? - correct
answers-spermiogenesis is the maturation of the spermatozoa.
A change in egg membrane potential due to an influx in Na+ ions is part of which of the
following? - correct answers-The fast block to polyspermy
A young man was given a chemotherapy drug that caused Sertoli cells to die. Which of
the following is most likely to result? - correct answers-Loss of all spermatic cells
All the cells of the embryo proper (all the cells in your body now) derive from which of
the following structures? - correct answers-Epiblast
At fertilization there is a series of Ca2+ (calcium) waves within the egg. Which of the
following occurs in the egg in response to these waves? - correct answers-Slow block to
polyspermy, degradation of CSF, and egg activation
Follicle stimulating hormone (FSH) stimulate the ____________ to _____________ and
secrete _____________. Fill in the blanks. - correct answers-Granulosa cells,
proliferate, estrogen
In the ovary, oocytes are held at diplotene of meiosis I at birth. How is the diplotene
block released? - correct answers-Progesterone activates c-Mos, which phosphorylates
maturation promotion factor (MPF).
Mammalian fertilization must occur ________________ . Fill in the blank with the
correct answer. - correct answers-the infundibulum of the oviduct or Fallopian tubes.
Mice were made that lacked the gene encoding ZP2 (Zp2-/-). How would you predict
that this would affect fertilization? - correct answers-It would block sperm binding to the
oocyte
Sea urchins release gametes into the ocean. Which of the following is a strategy
employed to direct sperm to eggs? - correct answers-Resact acts as a chemoattractant
to direct sperm motility towards the oocyte.
The acrosome reaction __________. Pick the best answer to finish the statement. -
correct answers-The acrosome reaction allows for a sperm to penetrate the jelly layer
by causing the release of enzymes which degrade the jelly layer around the egg.
The anterior visceral endoderm is important in axis formation and determines which end
of the embryo? - correct answers-Rostral
The diagram above describes an experiment done with 2 species of sea urchin.
Researchers removed the jelly coat from the eggs and incubated them with bindin
proteins from each species as diagrammed. Which of the following statements correctly
interprets these data? Ignore the E.M. image (A), the question is in reference to diagram
(B). - correct answers-The bindin molecules from one species will not cause
agglutination of the eggs of another.
What is the outcome of female mammalian meiosis? - correct answers-One haploid
germ cell and one to two polar bodies
