Bio188 Exam 2

The four haploid nuclei found at the end of meiosis

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Unformatted text preview: he four haploid nuclei found at the end of meiosis differ from one another in their genetic composition. Some of this difference is the result of A) cytokinesis B) replication of DNA C) separation of chromatids !22 spindle formation. ® crossmg over 34. Autocrine signals A) affect the autonomic nervous system B) affect cells near the cell secreting the signal @ affect the same cell that secretes the signal D) affect cells distant from the cell secreting the signal E) affect every cell in the body 35. Where do the microtubules used in mitosis form? A) nucleosome <§CD centrosome C) ribosome D) polysome E) spliceosome 36. The transcription factor determines which strand of DNA is the template for protein synthesis. A) True @ False 37. Which of the following is not a second messenger? A) cGMP B.1 Ca++ CJ) Na+ D) IP3 E) DAG Page 7 38. In all cells, glucose metabolism begins with A) chemiosmosis. B) fennentation. C) pyruvate oxidation. D) the citric acid cycle. ~ glycolysis. 39. Okazaki fragments are generated from the _ _strand because DNA polymerase only reads. in the direction. A) lead; 3' to 5' @ lag; 3' to 5' C) lead; 5' to 3' D) lag; 5' to 3' E) none of the above 40. Sickle-cell disease is caused by a A) nonsense B) silent C) frame-shift l2l sense W missense E mutation. 41. The final products of aerobic metabolism of glucose are: A) C02 and pyruvate B) H20 and pyruvate © H20 and C02 D) lactic acid E) ethanol 42. When ADP gains a phosphate group to fonn ATP, A) energy is released B) ribose loses an oxygen to become deoxyribose C) ATP becomes an enzyme .ill ATP binds to the cell membrane to stop glycolysis (§j energy is consumed Page 8 43. Receptors for water soluble hormones are: on the cell surface B) in the Golgi apparatus C) in the cell nucleus D) in the rough endoplasmic reticulum E) in the smooth endoplasmic reticulum ®...
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