exam3 - B iology 1442 Sp 2009 Exam 3 May 1, 2009 YES, you...

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Biology 1442 Sp 2009 Exam 3 May 1, 2009 YES, you can write on this exam! If you ask me this question you lose a point… 1) Which hypothalamic hormone triggers the secretion of FSH (follicle stimulating hormone)? A) luteinizing hormone (LH) B) follicle-stimulating hormone (FSH) C) progesterone D) human chorionic gonadotropin (HCG) E) gonadotropin-releasing hormone (GnRH) 2 In a laboratory experiment with 3 groups, 1 group of people drinks pure water, a 2nd group drinks an equal amount of beer, and a 3rd group drinks an equal amount of concentrated salt solution all during the same time period. Their urine production is monitored for several hours. At the end of the measurement period, which group will have produced the greatest volume of urine and which group the least (respectively)? A) beer the most, salt solution the least B) salt solution the most, water the least C) water the most, beer the least D) beer the most, water the least E) There will be no significant difference between these groups. 3) Which of the following is FALSE regarding innate immunity? A) quick response B) 1 st line of defense C) nonspecific, no memory D) highly specific, memory 4) Which of the following hormones is incorrectly paired with its action? A) Oxytocin- stimulates uterine contractions during childbirth B) Thyroxine- stimulates metabolic processes C) Insulin- stimulates glycogen breakdown in the liver D) ACTH- stimulates the release of glucocorticoids by the adrenal cortex E) Melatonin- affects biological rhythms, seasonal reproduction 5) If the osmotic pressure on the venous side of capillary beds drops below the hydrostatic pressure, then A) hemoglobin will not release oxygen. B) fluids will tend to accumulate in tissues. C) the pH of the interstitial fluids will increase. D) most carbon dioxide will be bound to hemoglobin and carried away from tissues.
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E) plasma proteins will escape through the endothelium of the capillaries. 6) Initial contact of a sperm with the coat of an egg causes the sperm to undergo A) mitosis. B) the cortical reaction. C) apoptosis. D) meiosis. E) the acrosomal reaction. 7) A reliable "marker" that a pregnancy has initiated, and that is detectable in excreted urine, is A) progesterone. B) estrogen. C) follicle-stimulating hormone. D) chorionic gonadotropin. E) hypothalamus releasing factors. 8) How does ADH function at the cellular level? A) ADH stimulates the reabsorption of glucose through channel proteins. B) It triggers the synthesis of an enzyme that makes the phospholipid bilayer more permeable to water. C) It causes membranes to include more phospholipids that have unsaturated fatty acids. D) It causes an increase in the number of aquaporin molecules of collecting duct cells.
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exam3 - B iology 1442 Sp 2009 Exam 3 May 1, 2009 YES, you...

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