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11 Jan 2018

1) what do sertoli cells do ? choose ALL the correct options

a)synthesize androgen binding proteins

b)remove damaged or abnormally developing sperm

c)produce semiferous tubular fluid

d)form and maintain the blood testies barrier

e)maintain and nourish developing sperm

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Hubert Koch
Hubert KochLv2
13 Jan 2018
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b) intracellular fluid

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11) Diuretic abuse leads to

a) All choices are correct

b) two choices are correct

c) No choice is correct

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1.

Which of the following types of cells would have the HIGHEST level of connexin expression?

A.

skeletal muscle
B.

red blood cells
C.

heart
D.

sperm cells
E.

all of the above would have equal levels of expression

2.

Which subunit(s) of the heterotrimeric G protein, when mutated, has/have the potential for permanent activity of the signaling pathway?

A.

α
B.

β
C.

γ
D.

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β and γ

3.

_____ may be effective anti-cancer drugs.

A.

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C.

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All of the answers are correct.
E.

Both monoclonal antibodies against offending receptors and protein kinase inhibitors


61) How areantiangiogenic drugs used in the treatment of

cancer?


A) These drugsstop the replication of DNA so cancer cells

cannot reproduce.


B) These drugsstop the growth of blood vessels into the

tumor, so the cells "starve" to death.


C) These drugsstop metastasis.


D) These drugsstimulate the immune system.


E) These drugsstimulate the production of free radicals,

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62) Which of the

following is true regarding photodynamic therapy?


A) It involves the use

of light sensitive drugs to target a cancer.


B) It uses magnets to

attract beads coated with a chemotherapeutic drug to acancer.


C) It is presently used

for the treatment of cancers of the breast and ovary.


D) It inhibits

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E) It involves the use

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63) Which ofthe following types of cancer kills the highest

percentage of people diagnosed with the condition?


A)lung


B)breast


C)prostate


D)skin


E)colon



64) A mutationin which of the following genes can lead to

breast cancer?


A) BT05


B) HeLa


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65) If angiogenesis

were not to occur, a tumor would reach the size of a ________and stop growing.


A) period on a

typewritten page (.)


B) baseball


C) grapefruit


D) pea


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the risk of which of the following types of cancer?


A)stomach


B)prostate


C)bladder



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mutated BRCA gene, the risk of breast cancer is about 60%.However, detection

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sample.


B) screening

mammography.


C) taking a biopsy of

breast tissue.


D) a PET scan.


E) urinalysis.



68) In some cases, why

doesn%u2019t the immune system recognize and destroy acancer?


A) Cancer cells that

produce abnormal antigens sometimes shed them.


B) Cancer cells have

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C) Cancer cells have

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D) Cancer cells develop

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coinciding with ovulation.


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C) prostategland.


D) epididymis.


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A) inhibin hasinhibited FHS secretion.


B) thehypothalamus has been stimulated to release inhibin.


C) spermproduction must be reduced.


D) the positivefeedback loop that regulates sperm production

is active.


E) blood levels of

testosterone are low

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