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Quiz #2 - Practice Questions 1. An onion cell does not contain chloroplasts. What metabolic process is an onion cell incapable of carrying out? 2. Draw the color distribution of a cell that has the color pigments a) inside the plastids and b) in the water of the central vacuole. 3. What organelle do the guard cells of the stomata contain that other skin cells of the leaf don't? 4. Why does the surrounding air warm up right before it rains? 5. Explain the different properties of water that allow it to travel up a thin capillary tube. 6. How much more H+ is in water at a pH of 4 compared to a pH of 6? 7. What is the effect of adding a buffer to a solution before exposing it to an acid or a base? 8. What is Brownian Motion? 9. A lettuce leaf is placed in a solution that is hypertonic to the cells. Describe the direction of water movement (if there is any). 10. Why is it not good to add too much fertilizer to plant soils? 11. List two environmental factors that affect enzyme action. 12. A candy bar has 10g of carbohydrates, 3g of fat and 1g of protein. How many calories does this candy bar yield? 13. The activity of lying still uses up 1.0 calorie/hour/kg. If a 50kg person spent 2 hours lying still, how many calories would he expend?
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©2003-2004 Dilek Sanver-Wang, MS
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