Concepts1 Practice Test 2

Concepts1 Practice Test 2 - Exam Name_ MULTIPLE CHOICE....

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Exam Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) All of the following molecules are part of the cell membrane except A) lipid. B) nucleic acids. C) protein. D) phosphate group. E) steroid. Use the diagram of the U-tube setup below to answer the questions that follow. The solutions in the two arms of this U-tube are separated by a membrane that is permeable to water and glucose but not to sucrose. Side A is half filled with a solution of 2 M sucrose and 1 M glucose. Side B is half filled with 1 M sucrose and 2 M glucose. Initially the liquid levels on both sides are equal. Figure 8.2 2) Initially, in terms of molarity, the solution in side A with respect to that in side B is A) hypotonic. B) plasmolyzed. C) isotonic. D) saturated. E) hypertonic. 3) All of the following are functions of membrane proteins except A) cell-cell recognition. B) protein synthesis. C) signal transduction. D) intercellular joining. E) transport. 4) Celery stalks that are immersed in fresh water for several hours become stiff and hard. Similar stalks left in a salt solution become limp and soft. From this we can deduce that the cells of the celery stalks are A) hypotonic to both fresh water and the salt solution. B) hypertonic to both fresh water and the salt solution. C) hypertonic to fresh water but hypotonic to the salt solution. D) hypotonic to fresh water but hypertonic to the salt solution. E) isotonic with fresh water but hypotonic to the salt solution. 1
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5) The movement of a substance across a biological membrane against its concentration gradient with the help of energy input is which of the following? A) diffusion
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This note was uploaded on 05/21/2008 for the course BIOL 114 taught by Professor Csurmacz during the Spring '08 term at Bloomsburg.

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Concepts1 Practice Test 2 - Exam Name_ MULTIPLE CHOICE....

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