At the end of the "photo" reactions, where electrons are being passes from photosystem to electron transport chain to photosystem, where do the electrons finally arrive?
a) ATP
b) NADPH
c) The electrons are transferred to the synthesis reactions
d) water
Ans: d) water
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Which of the following is not a factor that affects germicidal activity?
A. Length of exposure B. Microorganism being treated C. Material being treated D. Strength of the germicide E. All of the choices are factors.
Suppose Priestley repeated his experiment using many kinds of plants besides mint, and that when different plants were placed under the jar the candle remained lighted for different periods of time. What would be a logical conclusion from these experiments?
a) Different plants require different amounts of water. b) Different plants release different amounts of carbon dioxide. c) Different plants require different amounts of light. d) Different plants release different amounts of oxygen.
The bacterial enzyme streptokinase is used to digest fibrin (blood clots) in patients with atherosclerosis. Why doesn’t injection of streptokinase cause a streptococcal infection?
How do we know the streptokinase will digest fibrin only and not good tissues?
An autotroph
A) uses inorganic carbon dioxide as its carbon source. B) uses organic carbon as its carbon source. C) obtains its carbon from the bodies of other organisms. D) is nutritionally dependent on other living things.