The main function of an earthworm's gizzard is to
A) moisten food.
B) store food.
C) absorb food.
D) grind food.
Answer: D
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Applied microbiology deals with important practical problems in
A) medicine. B) agriculture. C) industry. D) medicine, agriculture, and industry.
Based on the evolutionary tree, which letter represents the common ancestor of all
eukaryotes?
a. A b. B c. C d. D
What sort of fossil data would support the hypothesis of punctuated equilibrium?
A) fossils that look alike through many layers of sediment B) fossils that look very different through many layers of sediment C) fossils that look alike through layers of sediment, then a layer with many new fossils D) a few layers of sediment with different fossils between layers of sediment without fossils
A friend tells you that he is going on a low-carb diet to lose weight because he thinks that carbs contain more energy than fats or protein. What would you tell your friend about his plan?
A) This is a good idea because sugars enter the fuel breakdown pathway earlier than other food molecules. B) This is a good idea because sugars have more electrons than fats and protein. C) This is a bad idea because fats contain more hydrogen atoms than carbohydrates and protein. D) This is a bad idea because all food molecules store the same amount of energy.