Enzymes are catalysts because they speed up chemical reactions. How do they speed up the reaction?
What will be an ideal response?
lower activation energy
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Despite the enormous amount of solar energy that plants are exposed to, photosynthesis is only able to transform about 1-2% of that energy into stored chemical energy
List three major factors responsible for this phenomenon and explain how each contributes to this inefficiency. What will be an ideal response?
Which one of the following is true of the sporophyte stage of a flowering plant?
A. It is haploid. B. It is 1N. C. It is a nonphotosynthetic stage. D. It is the obvious stage such as an oak tree. E. It is dependent on the gametophyte for nutrition.
External respiration is the process of
A) transporting gases in the blood stream to target cells. B) exchanging air in lungs with the surrounding environment. C) moving gases into or out of the blood stream within lung tissue. D) gas uptake by target cells. E) carbon dioxide release by cells into the bloodstream.
At what rate does carbon monoxide bind to hemoglobin over oxygen?
A) 10´ B) 20´ C) 100´ D) 200´