ASU BIO 351 QUESTIONS WITH COMPLETE
SOLUTIONS
Which of the following is a characteristic part of meiosis?
Synapsis
What type of cells will undergo meiosis?
Diploid germ cells
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?
Not: Type B spermatogonium
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 _____________.
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?
secretion of resact by the oocyte.
The acrosome reaction __________. Pick the best answer to
finish the statement.
releases enzymes necessary for penetrating the jelly layer
, 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?
Slow block to polyspermy, degradation of CSF, and egg
activation
Mice were made that lacked the gene encoding ZP2 (Zp2-/-).
How would you predict that this would affect fertilization?
It would block sperm binding to the oocyte
A change in egg membrane potential due to an influx of Na+
ions is part of which of the following?
The fast block to polyspermy
Which of the following are part of the process of capacitation in
mammalian spermatozoa? Pick all correct answers.
*Activation of adenylate cyclase
*hyperactivation of sperm
*removal of membrane cholesterol
*efflux of K+ ions from the spermatozoa
Mammalian fertilization must occur ________________ . Fill in
the blank with the correct answer.
the infundibulum of the oviduct or Fallopian tubes.
Which of the following cell types is formed from epiblast cells
that migrate through the primitive streak?
Mesoderm
SOLUTIONS
Which of the following is a characteristic part of meiosis?
Synapsis
What type of cells will undergo meiosis?
Diploid germ cells
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?
Not: Type B spermatogonium
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 _____________.
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?
secretion of resact by the oocyte.
The acrosome reaction __________. Pick the best answer to
finish the statement.
releases enzymes necessary for penetrating the jelly layer
, 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?
Slow block to polyspermy, degradation of CSF, and egg
activation
Mice were made that lacked the gene encoding ZP2 (Zp2-/-).
How would you predict that this would affect fertilization?
It would block sperm binding to the oocyte
A change in egg membrane potential due to an influx of Na+
ions is part of which of the following?
The fast block to polyspermy
Which of the following are part of the process of capacitation in
mammalian spermatozoa? Pick all correct answers.
*Activation of adenylate cyclase
*hyperactivation of sperm
*removal of membrane cholesterol
*efflux of K+ ions from the spermatozoa
Mammalian fertilization must occur ________________ . Fill in
the blank with the correct answer.
the infundibulum of the oviduct or Fallopian tubes.
Which of the following cell types is formed from epiblast cells
that migrate through the primitive streak?
Mesoderm
