Biology Discretes Test w. solutions

Biology Discretes - Biology Discretes Test Time 30 Minutes Number of Questions 30 This test consists of 30 discrete questionsquestions that are NOT

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Biology Discretes Test Time: 30 Minutes Number of Questions: 30 This test consists of 30 discrete questions—questions that are NOT based on a descriptive passage. These discretes comprise 15 of the 77 questions on the Physical Sciences and Biological Sciences sections of the MCAT.
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MCAT 2 as developed by BIOLOGY DISCRETES TEST DIRECTIONS: The following questions are not based on a descriptive passage; you must 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. 1. Which of the following are characteristic of animal and fungal cells, but NOT bacterial cells? I. They are eukaryotic. II. They possess ribosomes. III. They possess cell walls. IV. They reproduce asexually. A. I only B. I and 1I only C. I, II, and III only D. II III, and IV only 2. What is the function of a lysosome’s membrane? A. It provides an acidic environment for the lysosome’s hydrolytic enzymes within the neutral environment of the cell. B. It is continuous with the nuclear membrane, thereby linking the lysosome with the endoplasmic reticulum. C. It is used as an alternative site of protein synthesis. D. The cytochrome carriers of the electron transport chain are embedded within it. 3. The solid line in the figure below shows the course of the reaction A + B C + D in the absence of its catalyst. Which of the dotted lines would best represent the course of the same reaction in the presence of its catalyst? potential energy reaction coordinate 2 3 4 1 A. 1 B. 2 C. 3 D. 4 4. A culture of red blood cells is grown on a nutrient medium containing dinitrophenol which is a poison that blocks the electron transport chain. Under these conditions: A. ATP production will remain the same. B. ATP production will decrease. C. oxygen consumption will increase. D. lactic acid production will increase. GO ON TO THE NEXT PAGE.
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Biology Discretes Test KAPLAN 3 5. Down’s syndrome is a human genetic disorder that can be caused by the nondisjunction of chromosome 21 during meiosis. During which phase of meiosis does nondisjunction occur? A. Interphase B. Prophase C. Anaphase D. Metaphase 6. Brain cells of the housefly Musca domestica have 6 pairs of chromosomes. Therefore, it can be concluded that: A. the fly’s diploid number is 24. B. the fly’s haploid number is 12. C. the fly’s gametes contain 3 chromosomes. D. the fly’s gametes contain 6 chromosomes. 7. Fetal lungs are supplied with only enough blood to nourish the lung tissue itself, since fetal lungs are nonfunctional prior to birth. Obstruction of which of the following fetal structures would cause an increase in blood supply to fetal lungs? A.
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This note was uploaded on 01/22/2012 for the course PHYSICS 121 taught by Professor Fayngold during the Spring '10 term at NJIT.

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Biology Discretes - Biology Discretes Test Time 30 Minutes Number of Questions 30 This test consists of 30 discrete questionsquestions that are NOT

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