Bio 124 Exam 3 UPDATED Exam Questions
and CORRECT Answers
During fertilization, the acrosomal contents _____. - CORRECT ANSWER - digest the
protective jelly coat on the surface of the egg
What makes sexually reproduced offspring genetically different from their parents? - CORRECT
ANSWER - genetic recombination during meiosis
On a submarine expedition to the ocean bottom, you discover a population of fish that are only
female. What type of reproduction does this fish most likely use? - CORRECT ANSWER -
parthenogenesis
Which of the following is most true of sexual reproduction? - CORRECT ANSWER -
Only half of the offspring from sexually reproducing females are also females.
In an animal that switches between sexual and asexual reproduction, when is sexual reproduction
more likely to occur? - CORRECT ANSWER - when conditions for survival are
unfavorable
Which of the following structures in females is analogous in function to the vas deferens in
males? - CORRECT ANSWER - oviduct
In humans, the follicular cells that remain behind in the ovary following ovulation become
_____. - CORRECT ANSWER - a steroid-hormone synthesizing structure called the
corpus luteum
A physician finds that a nine-year-old male patient is entering puberty much earlier than is usual.
Such a condition is most likely the result of a tumor in the _____. - CORRECT
ANSWER - anterior pituitary, producing elevated levels of gonadotropin-stimulating
hormone
, The primary difference between estrous and menstrual cycles is that _____. - CORRECT
ANSWER - the endometrium shed by the uterus during the estrous cycle is reabsorbed
with no extensive fluid flow out of the body, whereas the shed endometrium of menstrual cycles
is excreted from the body
In correct chronological order, the three phases of the human ovarian cycle are _____. -
CORRECT ANSWER - follicular ovulation luteal
In correct chronological order, the three phases of the human uterine cycle are _____. -
CORRECT ANSWER - menstrual proliferative secretory
An inactivating mutation in the progesterone receptor gene would likely result in _____. -
CORRECT ANSWER - the inability of the uterus to support pregnancy
A primary response by the Leydig cells in the testes to the presence of luteinizing hormone is an
increase in the synthesis and secretion of _____. - CORRECT ANSWER - testosterone
The primary function of the corpus luteum is to _____. - CORRECT ANSWER - maintain
progesterone and estrogen synthesis after ovulation has occurred
For your internship at the local zoo, you have been assigned to help with the new orangutan-
breeding program. Little is known about orangutan reproductive hormones, but hormone
feedback cycles are often the same in closely related animals. You have been asked to use your
knowledge of the interactions of human reproductive hormones to recommend injections to
promote ovulation in a female orangutan when a visiting male arrives for a brief breeding visit.
Refer to the paragraph on the orangutan breeding program. Which of the following hormones
would you use if you want to induce ovulation right away? - CORRECT ANSWER -
luteinizing hormone (LH)
Refer to the paragraph on the orangutan breeding program. Which of the following hormones
would you use if you want to induce ovulation in a few days? - CORRECT ANSWER -
estradiol (estrogen)
and CORRECT Answers
During fertilization, the acrosomal contents _____. - CORRECT ANSWER - digest the
protective jelly coat on the surface of the egg
What makes sexually reproduced offspring genetically different from their parents? - CORRECT
ANSWER - genetic recombination during meiosis
On a submarine expedition to the ocean bottom, you discover a population of fish that are only
female. What type of reproduction does this fish most likely use? - CORRECT ANSWER -
parthenogenesis
Which of the following is most true of sexual reproduction? - CORRECT ANSWER -
Only half of the offspring from sexually reproducing females are also females.
In an animal that switches between sexual and asexual reproduction, when is sexual reproduction
more likely to occur? - CORRECT ANSWER - when conditions for survival are
unfavorable
Which of the following structures in females is analogous in function to the vas deferens in
males? - CORRECT ANSWER - oviduct
In humans, the follicular cells that remain behind in the ovary following ovulation become
_____. - CORRECT ANSWER - a steroid-hormone synthesizing structure called the
corpus luteum
A physician finds that a nine-year-old male patient is entering puberty much earlier than is usual.
Such a condition is most likely the result of a tumor in the _____. - CORRECT
ANSWER - anterior pituitary, producing elevated levels of gonadotropin-stimulating
hormone
, The primary difference between estrous and menstrual cycles is that _____. - CORRECT
ANSWER - the endometrium shed by the uterus during the estrous cycle is reabsorbed
with no extensive fluid flow out of the body, whereas the shed endometrium of menstrual cycles
is excreted from the body
In correct chronological order, the three phases of the human ovarian cycle are _____. -
CORRECT ANSWER - follicular ovulation luteal
In correct chronological order, the three phases of the human uterine cycle are _____. -
CORRECT ANSWER - menstrual proliferative secretory
An inactivating mutation in the progesterone receptor gene would likely result in _____. -
CORRECT ANSWER - the inability of the uterus to support pregnancy
A primary response by the Leydig cells in the testes to the presence of luteinizing hormone is an
increase in the synthesis and secretion of _____. - CORRECT ANSWER - testosterone
The primary function of the corpus luteum is to _____. - CORRECT ANSWER - maintain
progesterone and estrogen synthesis after ovulation has occurred
For your internship at the local zoo, you have been assigned to help with the new orangutan-
breeding program. Little is known about orangutan reproductive hormones, but hormone
feedback cycles are often the same in closely related animals. You have been asked to use your
knowledge of the interactions of human reproductive hormones to recommend injections to
promote ovulation in a female orangutan when a visiting male arrives for a brief breeding visit.
Refer to the paragraph on the orangutan breeding program. Which of the following hormones
would you use if you want to induce ovulation right away? - CORRECT ANSWER -
luteinizing hormone (LH)
Refer to the paragraph on the orangutan breeding program. Which of the following hormones
would you use if you want to induce ovulation in a few days? - CORRECT ANSWER -
estradiol (estrogen)
