Coenzymes function to
A. change the shape of enzymes, allowing different additional substrates to bind.
B. dilate blood vessels, allowing more blood to flow, allowing more substrate to reach enzymes.
C. interact directly with enzymes, either enabling the reaction to occur or making the substrate-enzyme interaction more efficient.
D. denature the enzyme, stopping the chemical reaction from occurring.
E. absorb excess hydrogen and hydroxide ions, keeping the pH relatively stable, so that reactions can occur most efficiently.
Answer: C
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You are studying a newly-established nature preserve, and find that the biomass of herbivores within it is 10 kJ/m2. Based on the graph below, what would you predict about the primary productivity of the area relative to other ecosystems?
A. It would be higher than tundra, but lower than savannah. B. It would be higher than savanna, but lower then tropical forest. C. It would be higher than savannah, but lower than temperate forest. D. It would be higher than desert, but lower than tundra.
Which region(s) of the brain, present in a 5-week old embryo, is/are derived from the midbrain?
a. telencephalon only b. diencephalon only c. mesencephalon only d. telencephalon and diencephalon e. telencephalon and mesencephalon
Which of the following is the best example of potential energy?
a. Heat from a lightbulb b. A moving train c. Light from the sun d. Still water behind a dam
The difference between the rate of carbon uptake in photosynthesis and the rate of carbon loss due to autotrophic and heterotrophic respiration is the net ________ productivity
Fill in the blank(s) with correct word