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Bio 1102 Exam 3 questions with correct answers.
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Bio 1102 Exam 3 questions with correct answers.
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Bio 1102 Exam 3 questions with correct answersTrue or False: One difference between cell division that is used for
reproduction (meiosis) and cell division that is used for growth and
repair (mitosis) is that meiosis produces cells with half the amount of
DNA as the cells produced by mitosis. Correct Answer-True
All of the following are ways in which blood functions to maintain
homeostasis in the human body except which one?
-moving carbon dioxide away from cells following completion of
cellular respiration
-transporting hormones and other chemical messengers throughout the
body
-transporting amino acids and other nutrients derived from digestion
throughout the body
-Conducting action potentials that originate in the nervous system to
help with cell communication
-All of the above Correct Answer-Conducting action potentials that
originate in the nervous system to help with cell-cell communication
The ovaries and testes are similar in that they Correct Answer--both
produce hormones
-both produce gametes (sex cells)
There are some muscle relaxants specifically formulated to only work on
smooth muscle. Based on what you know of the scrotum and its
anatomy/function, what should the chief effect of this kind of muscle
relaxant be on the functioning of the scrotum? (Muscle relaxants should
,relax muscle tissue) Correct Answer-The scrotum would no longer be
able to control temperature of the developing sperm as well as it usually
does, possibly leading to decreased sperm counts in the testes
Sertoli cells in the testes: Correct Answer-Increase FSH release
Increase LH release
Increase testosterone release
Increase sperm production
Anabolic steroids are probably what you think of when you think of the
word "steroid" - they are used illegally by some athletes to bulk up their
muscles. The reason that they work is because anabolic steroids are
similar in structure/function to testosterone - they have their effects by
mimicking testosterone in the body and one of testosterone's effects is
increasing muscle growth. Testosterone does have other effects,
however, as you have just learned. Based on the feedback loop
regulating sperm production (shown below), which of the following
hormones would likely have an increase in secretion in someone taking
anabolic steroids? (Pick all that apply) GnRH, LH, FSH, Testosterone,
None of the above Correct Answer-None of the above are increased in
reaction to taking anabolic steroids
A vasectomy involves cutting the ductus deferens tying off each cut end.
Which of the following components of semen would this procedure
affect? Correct Answer-Sperm
One structure that never has sperm in it is the _____. Correct Answer-
Seminal vesicles
, What would happen if the smooth muscles in the erectile tissue of the
penis were unable to contract after they were relaxed? Correct Answer-
The penis would be unable to become flaccid
The function of oxytocin in lactation is to cause the contraction of
smooth muscle in the mammary tissue, ejecting milk. It is also involved
in other processes in the reproductive system. Based on its function in
lactation, which of the following is most likely to be affected by
oxytocin? Correct Answer-Contraction of smooth muscle in uterus
during labor to expel baby
What is the correct order of reproductive structures in which the sperm
will pass through to get to the immature egg from first to last: Correct
Answer-Vagina, Cervix, Uterus, Oviduct
Which of the following would be most accurate in predicting ovulation,
were you able to test for them? Correct Answer-a surge of LH
Given estrogen's effects on LH, what would be the ultimate effect of a
drug that keeps estrogen at a steady, but medium concentration (rather
than increasing and decreasing over the course of the month)? Correct
Answer-Since the LH surge would not happen, this would prevent
ovulation
The presence of hCG can be used in pregnancy tests as an indicator of
pregnancy because: Correct Answer-hCG is produced by developing
embryos (after the sperm and egg have fused)
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