1. If one were to identify the most 6. Dialysis membrane (a) is selectively perm
ID: 52693 • Letter: 1
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1. If one were to identify the most 6. Dialysis membrane (a) is selectively permeable. (b) is used in these experiments to important compound for sustenance of life, it would probably be (a) salt. (b) sugar (c) water (d) I2KI simulate cellular membranes. has pores that allow passage to specific-sized molecules (c) (d) all of the above 2. A solvent is 7. Specifically, osmosis requires the expenditure of cellular energy (a) the substance in which solutes are (a) (b) is diffusion of water from lower to (c) (d) none of the above dissolved (b) a salt or sugar. (c) one component of a biological higher concentration. is diffusion of water across a selectively permeable membrane. membrane. (d) selectively permeable. -3. Diffusion (a) is a process requiring cellular energy (b) is the movement of molecules from a 8. When the cytoplasm of a red blood cell has lost water to its surroundings, the cell is said to be (a) isotonic. (b) burst (c) hemolyzed (d) crenate. region of higher concentration to one of lower concentration. (c) occurs only across selectively permeable membranes (d) none of the above -4. Cellular membranes 9. When the cytoplasm of a plant cell is (a) consist of a phospholipid bilayer pressed against the cell wall, the cell is said to be (a) turgid (b) plasmolyzed (c) hemolyzed (d) crenate. containing embedded proteins. (b) control the movement of substances into and out of cells. (c) are selectively permeable (d) all of the above 5. An example of a solute is (a) NaCl. (b) water (c) sucrose (d) both a and c 10. Cholera is a disease whose main symptom is (a) increase in water uptake by intestine cells. (b) rapid dehydration. (c) uptake of glucose by intestine cells. (d) none of the aboveExplanation / Answer
1.c. water
2.a.
3. b
4.d
5.d
6.d
7. b and c both correct together. but c is most correct
8.d. crenate is due to shrinking
9.a. turgid which means swollen and distended or congested.
10. b- rapid dehydration
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