20) Which of the following undergoes an oxidation reaction to form a disulfide bond?

(A) serine

(B) cysteine

(C) methionine

(D) threonine

(E) tyrosine

1) Which of the following, when paired with its complementary strand, would have the highestTm?(A) AAGTTCCAGT(B) GCAGCAGCAT(C) ATTACGAGCT(D) GCGAAATCAA(E) TGACCTTGAA

2) The fatty acid designated 18:2cΔ9,12 is best described as a _______ fatty acid.(A) saturated(B) unsaturated(C) polyunsaturated(D) hydrogenated(E) partially hydrogenated

3) When glucagon binds to its receptor on a liver cell, which of the following sequence of eventsoccurs to activate protein kinase A?(A) activation of adenylate cyclase, activation of G protein, production of cAMP(B) activation of G protein, activation of adenylate cyclase, production of cAMP(C) activation of G protein, production of cAMP, activation of adenylate cyclase(D) production of cAMP, activation of adenylate cyclase, activation of G protein(E) none of the above

4) For each molecule of acetyl-CoA that enters the citric acid cycle, which of the following bestrepresents the net products of the cycle?(A) 2 CO2, 2 NADH, 2 FADH2, 1 GTP, 1 oxaloacetate(B) 1 CO2, 3 NADH, 1 FADH2, 2 GTP, 1 oxaloacetate(C) 2 CO2, 3 NADH, 1 FADH2, 1 GTP, 0 oxaloacetate(D) 1 CO2, 2 NADH, 1 FADH2, 2 GTP, 0 oxaloacetate(E) 2 CO2, 3 NADH, 1 FADH2, 1 GTP, 1 oxaloacetate

5) Which of the following is the most important regulatory enzyme in fatty acid synthesis?(A) citrate lyase(B) malic enzyme國立高雄大學 114 學年度研究所碩士班招生考試試題科目：生物化學考試時間：100 分鐘系所：生命科學系本科原始成績：100 分是否使用計算機：否背面尚有試題 第 2 頁，共 7 頁(C) acetyl-CoA carboxylase(D) acetyl-CoA-ACP transacylase(E) malonyl-CoA-ACP transacylase

6) Which of the following would be considered a biosynthetic pathway?(A) glycolysis(B) glycogen synthesis(C) fatty acid β-oxidation(D) citric acid cycle(E) electron transport

7) What is the oxidant in the following reaction?(A) ethanol(B) NAD+(C) acetaldehyde(D) NADH(E) H+

8) What is the source of acetyl-CoA for the glyoxylate cycle?(A) pyruvate(B) amino acids(C) fatty acids(D) cholesterol(E) all of the above

9) Lactose, the disaccharide of galactose and glucose, is synthesized from which of the followingactivated monosaccharides?(A) uridine triphosphate glucose(B) uridine triphosphate galactose(C) uridine diphosphate glucose(D) uridine diphosphate galactose(E) none of the above

1. Which of the following eukaryotic organisms is both autotrophic and heterotrophic? (A) yeast (B) humans (C) Venus fly trap (D) redwood trees (E) Mushrooms

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