ANSC 224 Male Repro Exam S12 And S13
Questions with Correct Answers 2025-
2026
In the experiment we discussed in class, oocytes that lacked the cortical granule enzyme Ovastacin were
unable to: - CORRECT ANSWER -Prevent many sperm from binding to them after they were fertilized
The usefulness of the PSA test has been questioned recently because: - CORRECT ANSWER -About 70-
75% of men with elevated PSA do not have prostate cancer
If a youngFman were taking androgens as anabolic steroids, his own testosterone would be due t
o . -FCORRECT ANSWER -Low; Negative feedback
Protein hormone receptors mustFbe on the plasma membrane because: - CORRECT ANSWER -
The hormone cannot penetrate through the plasma mebrane
Stem cell division in oogenesis ends when the female isFin . - CORRECT ANSWER -The fetal stage
The only somatic cells inside the seminiferous tubule are the . - CORRECT ANSWER -Sertoli cells
The lass cell division in spermatogenesis occurs in this phase: - CORRECT ANSWER -Meiosis
Diethyl stilbestrol (DES) is similar in chemical structure to which steroid? - CORRECT ANSWER -Estradiol
Problems in oogenesis often manifested in later developmental problems because - CORRECT ANSWER -
the oocyte must provide a storehouse of materials for the developing embryo
The migration of primodial germ cells migrate into the gonad occurs the gonad begins to differenti
ate - CORRECT ANSWER -after
Animals that are XY but have a mutation in Sry will: - CORRECT ANSWER -appear as females with ovaries
XY individuals that have Androgen insensitivity syndrome - CORRECT ANSWER -Have a female phenotype
, If placentas of bovine male-female twin fetuses do not fuse together, what is the likely outcome? -
CORRECT ANSWER -both fetuses will develop into fertile animals
In males, FSH regulates the production of by . - CORRECT ANSWER -Inhibin ; Sertoli cells
TightFjunctions between protect male germ cells. - CORRECT ANSWER -
Sertoli cells ; more advanced
The reproductive technology that has been most heavily adopted and has the greatest impact on animals
is? - CORRECT ANSWER -Artificial insemination
Viagra acts on a specific enzyme to prevent breakdown of -FCORRECT ANSWER -cGMP
DHEAF(dehydropiandrosterone), available in stores sellingFnutritional supplements, can be converted by t
he body into - CORRECT ANSWER -Estrodiol, dihydrotestosterone, and testosterone.
Disphenol A (BPA) has which effects on the body? - CORRECT ANSWER -
Agonist of estrogen receptor and antagonist of estrogen receptor
When sperm are cryopreserved (frozen-stored), a cryopreservative is added that - CORRECT ANSWER -
is toxic, reduces the freezing point, reduces ice crystals formation and produces larger gaps between ice c
rystals.
Oocytes arrested in the late diplotene or dictyate phase of prophase I resume meiosis -
CORRECT ANSWER -at ovulation
In bilateral cryptorchids, spermatogenesis is disrupted because - CORRECT ANSWER -
testicular temperature is too warm
If you labeled a very beginning spermatogonia, about how much time would itFtake for that cell to form a
sperm and be spermiated? - CORRECT ANSWER -2 months (~61 days)
Questions with Correct Answers 2025-
2026
In the experiment we discussed in class, oocytes that lacked the cortical granule enzyme Ovastacin were
unable to: - CORRECT ANSWER -Prevent many sperm from binding to them after they were fertilized
The usefulness of the PSA test has been questioned recently because: - CORRECT ANSWER -About 70-
75% of men with elevated PSA do not have prostate cancer
If a youngFman were taking androgens as anabolic steroids, his own testosterone would be due t
o . -FCORRECT ANSWER -Low; Negative feedback
Protein hormone receptors mustFbe on the plasma membrane because: - CORRECT ANSWER -
The hormone cannot penetrate through the plasma mebrane
Stem cell division in oogenesis ends when the female isFin . - CORRECT ANSWER -The fetal stage
The only somatic cells inside the seminiferous tubule are the . - CORRECT ANSWER -Sertoli cells
The lass cell division in spermatogenesis occurs in this phase: - CORRECT ANSWER -Meiosis
Diethyl stilbestrol (DES) is similar in chemical structure to which steroid? - CORRECT ANSWER -Estradiol
Problems in oogenesis often manifested in later developmental problems because - CORRECT ANSWER -
the oocyte must provide a storehouse of materials for the developing embryo
The migration of primodial germ cells migrate into the gonad occurs the gonad begins to differenti
ate - CORRECT ANSWER -after
Animals that are XY but have a mutation in Sry will: - CORRECT ANSWER -appear as females with ovaries
XY individuals that have Androgen insensitivity syndrome - CORRECT ANSWER -Have a female phenotype
, If placentas of bovine male-female twin fetuses do not fuse together, what is the likely outcome? -
CORRECT ANSWER -both fetuses will develop into fertile animals
In males, FSH regulates the production of by . - CORRECT ANSWER -Inhibin ; Sertoli cells
TightFjunctions between protect male germ cells. - CORRECT ANSWER -
Sertoli cells ; more advanced
The reproductive technology that has been most heavily adopted and has the greatest impact on animals
is? - CORRECT ANSWER -Artificial insemination
Viagra acts on a specific enzyme to prevent breakdown of -FCORRECT ANSWER -cGMP
DHEAF(dehydropiandrosterone), available in stores sellingFnutritional supplements, can be converted by t
he body into - CORRECT ANSWER -Estrodiol, dihydrotestosterone, and testosterone.
Disphenol A (BPA) has which effects on the body? - CORRECT ANSWER -
Agonist of estrogen receptor and antagonist of estrogen receptor
When sperm are cryopreserved (frozen-stored), a cryopreservative is added that - CORRECT ANSWER -
is toxic, reduces the freezing point, reduces ice crystals formation and produces larger gaps between ice c
rystals.
Oocytes arrested in the late diplotene or dictyate phase of prophase I resume meiosis -
CORRECT ANSWER -at ovulation
In bilateral cryptorchids, spermatogenesis is disrupted because - CORRECT ANSWER -
testicular temperature is too warm
If you labeled a very beginning spermatogonia, about how much time would itFtake for that cell to form a
sperm and be spermiated? - CORRECT ANSWER -2 months (~61 days)
