BIO 351 MODULE 2 (2026/2027) QUESTIONS AND
CORRECT ANSWERS GRADED A+
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?
Spermiogenesis
A young man was given a chemotherapy drug that caused Sertoli cells to die.
Which of the following is most likely to result?
Loss of all spermatic cells
Which of the following is the end result of spermatogenesis?
Haploid round spermatid
What is the outcome of female mammalian meiosis?
One haploid germ cell and one to two polar bodies
In the ovary, oocytes are held at diplotene of meiosis I at birth. How is the
diplotene block released?
, Progesterone activates c-Mos, which phosphorylates maturation promotion factor
(MPF).
When do mammalian oocytes complete meiosis?
after fertilization
Follicle stimulating hormone (FSH) stimulate the ____________ to
_____________ and secrete _____________. Fill in the blanks.
Granulosa cells, proliferate, estrogen
You have found a compound that you suspect is a chemoattractant for sperm. If so
it should_________.
bind to sperm
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).
Bindin binds in a species specific manner to eggs
Sea urchins release gametes into the ocean. Which of the following is a strategy
employed to direct sperm to eggs?
CORRECT ANSWERS GRADED A+
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?
Spermiogenesis
A young man was given a chemotherapy drug that caused Sertoli cells to die.
Which of the following is most likely to result?
Loss of all spermatic cells
Which of the following is the end result of spermatogenesis?
Haploid round spermatid
What is the outcome of female mammalian meiosis?
One haploid germ cell and one to two polar bodies
In the ovary, oocytes are held at diplotene of meiosis I at birth. How is the
diplotene block released?
, Progesterone activates c-Mos, which phosphorylates maturation promotion factor
(MPF).
When do mammalian oocytes complete meiosis?
after fertilization
Follicle stimulating hormone (FSH) stimulate the ____________ to
_____________ and secrete _____________. Fill in the blanks.
Granulosa cells, proliferate, estrogen
You have found a compound that you suspect is a chemoattractant for sperm. If so
it should_________.
bind to sperm
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).
Bindin binds in a species specific manner to eggs
Sea urchins release gametes into the ocean. Which of the following is a strategy
employed to direct sperm to eggs?
