Endocrine System Test w. solutions

Endocrine System Test w. solutions - BIOLOGY TOPICAL:...

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BIOLOGY TOPICAL: Endocrine System Test 1 Time: 21 Minutes* Number of Questions: 16 * The timing restrictions for the science topical tests are optional. If you are using this test for the sole purpose of content reinforcement, you may want to disregard the time limit.
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MCAT 2 as developed by DIRECTIONS: Most of the questions in the following test are organized into groups, with a descriptive passage preceding each group of questions. Study the passage, then select the single best answer to each question in the group. Some of the questions are not based on a descriptive passage; you must also select the best answer to these questions. If you are unsure of the best answer, eliminate the choices that you know are incorrect, then select an answer from the choices that remain. Indicate your selection by blackening the corresponding circle on your answer sheet. A periodic table is provided below for your use with the questions. PERIODIC TABLE OF THE ELEMENTS 1 H 1.0 2 He 4.0 3 Li 6.9 4 Be 9.0 5 B 10.8 6 C 12.0 7 N 14.0 8 O 16.0 9 F 19.0 10 Ne 20.2 11 Na 23.0 12 Mg 24.3 13 Al 27.0 14 Si 28.1 15 P 31.0 16 S 32.1 17 Cl 35.5 18 Ar 39.9 19 K 39.1 20 Ca 40.1 21 Sc 45.0 22 Ti 47.9 23 V 50.9 24 Cr 52.0 25 Mn 54.9 26 Fe 55.8 27 Co 58.9 28 Ni 58.7 29 Cu 63.5 30 Zn 65.4 31 Ga 69.7 32 Ge 72.6 33 As 74.9 34 Se 79.0 35 Br 79.9 36 Kr 83.8 37 Rb 85.5 38 Sr 87.6 39 Y 88.9 40 Zr 91.2 41 Nb 92.9 42 Mo 95.9 43 Tc (98) 44 Ru 101.1 45 Rh 102.9 46 Pd 106.4 47 Ag 107.9 48 Cd 112.4 49 In 114.8 50 Sn 118.7 51 Sb 121.8 52 Te 127.6 53 I 126.9 54 Xe 131.3 55 Cs 132.9 56 Ba 137.3 57 La * 138.9 72 Hf 178.5 73 Ta 180.9 74 W 183.9 75 Re 186.2 76 Os 190.2 77 Ir 192.2 78 Pt 195.1 79 Au 197.0 80 Hg 200.6 81 Tl 204.4 82 Pb 207.2 83 Bi 209.0 84 Po (209) 85 At (210) 86 Rn (222) 87 Fr (223) 88 Ra 226.0 89 Ac † 227.0 104 Unq (261) 105 Unp (262) 106 Unh (263) 107 Uns (262) 108 Uno (265) 109 Une (267) * 58 Ce 140.1 59 Pr 140.9 60 Nd 144.2 61 Pm (145) 62 Sm 150.4 63 Eu 152.0 64 Gd 157.3 65 Tb 158.9 66 Dy 162.5 67 Ho 164.9 68 Er 167.3 69 Tm 168.9 70 Yb 173.0 71 Lu 175.0 90 Th 232.0 91 Pa (231) 92 U 238.0 93 Np (237) 94 Pu (244) 95 Am (243) 96 Cm (247) 97 Bk (247) 98 Cf (251) 99 Es (252) 100 Fm (257) 101 Md (258) 102 No (259) 103 Lr (260) GO ON TO THE NEXT PAGE.
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Endocrine System Test 1 KAPLAN 3 Passage I (Questions 1–6) The corpus luteum is the yellowish mass of cells formed from an ovarian follicle following ovulation. In the absence of fertilization, the corpus luteum normally disintegrates approximately two weeks after ovulation. If fertilization does occur, the developing embryo begins to secrete the peptide hormone human chorionic gonadotropin ( hCG ), which prevents regression of the corpus luteum. hCG also ensures that the corpus luteum continues to secrete progesterone until the second trimester of pregnancy, when the placenta becomes the primary source of progesterone secretion. Both progesterone and estrogen are secreted at steadily increasing levels throughout pregnancy. The presence of high levels of estrogen and progesterone maintains the physiologic conditions required for pregnancy, and prevents ovulation by inhibiting the secretion of the pituitary hormones LH and FSH. Home pregnancy tests are designed to detect hCG excreted in the urine. These tests typically contain two reagents, a suspension of latex particles covalently bound to hCG and a solution of hCG antibodies. To test for hCG, a drop of urine is mixed with a drop of the antibody- containing solution on a black slide. One drop of hCG- bound latex particles is then added. Agglutination (an
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This note was uploaded on 11/21/2009 for the course BIO 1B taught by Professor Carlson,mischel,power during the Summer '07 term at Berkeley.

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Endocrine System Test w. solutions - BIOLOGY TOPICAL:...

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