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21 Cards in this Set
- Front
- Back
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Which of the following is not a type of connective tissue?
a) Cartilage b) Blood c) Collagen d) Adipose e) All of the above are types of connective tissue |
E
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Which of the following statement(s) is/are TRUE about simple columnar epithelium?
a) It is abundant in alveoli of the lungs and cappillaries of simple diffusion b) It is abundant intestine for absorption of nutrients c) It has an apical surface adjacent to blood vessels d) None of the above e) All of the above |
B
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Only certain cells (target cells) in the body respond to the steroid hormone testosterone. Which is the best explanation for this?
a) Only target cells are exposed to testosterone b) Only target cells contain receptors that are able to bind testosterone c) Testosterone is unable to enter non target cells d) Only target cells contain the sequence of DNA that is recongnized and bound by the hormone receptor-testosterone complex e) Non-target cells do not have the secondary messengers required to activate the cell response to the testosterone |
B
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All of the following hormones are released by the anterior pituitary gland EXCEPT:
a) ACTH b) GH c) ADH d) LH e) Prolactin |
C
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Which of the following is an example of positive feedback?
a) An increase in blood sugar concentration increases the amount of the hormone that stores sugar as glycogen b) A decrease in blood sugar concentration increases the amount of the hormone that converts glycogen to glucouse c) An infant's suckling at the mother's breast incresases the amount of hormone that induces the release of milk from the mammary glands d) An increases in calcium concentration increases the amount of hormone that stores calcium in bone e) A decrease in calcium concentration increases the amount of the hormone that releases calcium from bone |
C
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Blood saples taken from an individual who has been gasting for 24 hours would have which of the following?
a) High levels of insulin and high levels of glucagons b) high levels of insulin and low levels of glucagons c) Low levels of insulin and high levels of glucagons d) Low levels of insulin and low levels of glucagons e) none of the above |
C
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The research would most likely perform the gel shift assay by
a) incubating a series of reactions containing the receptor of interest with different radiolabeled hormones b) incubating a series a reactions containing the radiolabeled receptor of interest with different hormones c) incubating a series of reactions containing the radiolabeled DNA sequence with different receptors of interest d) incubating a series of raections containing the radiolabeled DNA sequence with an assortment of particular hormones e) incubating a series of reactions containing the radiolabeled hormones receptor with an assortment of particular hormones |
C
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All of the following occur during the luteal phase of mammalian reproduction EXCEPT:
a)high concentration of estrogen and progesterone inhibit FSH and LH release from anterior pituitary gland b) LH stimulates production of estrogen from the ovary c) The reduction of FSH and HF leads to the degeneration of the corpus luteum d The ruptured follicle becomes the corpus luteum which secretes estrogen and progesterone e) Progesterone stimulates further proliferation of the uterine lining |
B
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Using an antagonist to permanently block the ligand binding site of the LH receptor will lead to:
a)Proliferation of multiple follicle in the ovary b)Formation of corpus luteum without ovulation c)Arrest of primary oocyte in prophase I d)Termination of estrogen synthesis e)Increase the production of estrogen and progesterone from the ovary |
D
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Why is capillary leaky and artery isn't?
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Artery has a wall of smooth muscle and connective tissue outside of its endothelial layer, but capillary doesn't.
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What drive the exchange of capillary and interstitual fluid?
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Equilibrium
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All of the following are characteristics of artery EXCEPT:
a) Thick b) Flexible c) Not leaky d) Low blood pressure e) All are true |
D
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Which of the following characteristic about capillary is false?
a) microscopic b) leaky c) only has a layer of endotherial cells d) lowest blood velocity point e) All are true |
E
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What is the disadvantage to capillary leakiness?
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Since it is very leaky, it also leaks out the good stuff, like water and proteins
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The acrosome contains enzymes for degradation and penetration past what layer in the secondary oocyte?
a. Granulose cells b. Thecal cells c. Plasma membrane d. Nuclear membrane e. Zona pullucida |
E
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The acrosomal reaction is designed as a “fast block” because
a. It induces membrane depolarization to prevent other sperm from binding b. It releases ions that render other sperms useless c. It hardens the jelly coat to prevent other sperm from entering d. It causes the fusion of vesicles with the membrane to prevent polyspermy e. None of the above |
A
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Which of the following prevents the start of a new menstrual cycle?
a. Production of LH by the corpus luteum b. Production of HCG by the embryo c. Production of progesterone by the embryo d. Production of LH and LSH by the hypothalamus e. Decrease in the circulating levels of estrogen and progesterone |
B
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During the second and third trimesters of pregnancy, which hormones stimulate the growth of the mammary glands?
a. Prolactin b. CS c. Estrogen d. A and B e. All of the above |
E
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The animal hemisphere differs from the vegetal hemisphere in that
a. The former contains the gray crescent b. The former contains more yolk concentration c. The latter develops into the dorsal back d. The latter contains no yolk concentration e. None of the above |
A
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The gray crescent in the frog is important in development because
a. It marks the ventral surface of the embryo b. It develops into the tail of the tadpole c. It marks the dorsal surface of the embryo d. It develops into the head of the tadpole e. It doesn’t do anything really |
C
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During pregnancy, the secretion of HCG functions to
a. induce a surge in Lh b. decrease the levels of FSH and LH production c. Maintain the corpus luteum d. Thickening of the endometrium e. Atrophy of the corpus luteum |
C
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