The internal pH of most cells is near neutral. This allows
a. water to break down into H+ and OH-.
b. enzymes within the cells to act at peak efficiency.
c. the buffers produced within the body to affect these cells.
d. enzymes outside of these cells to function.
e. rapid fluctuations between acidic and basic conditions within the cells.
B
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You buy a Schlumbergera plant, also known as a Christmas Cactus, to decorate the desk where you study late into the night. It is now December, and there are no signs of flower buds forming. What is the most plausible explanation for the lack of flowers?
A. Flowering in this plant is controlled by both day length and temperature. The warm room and extended exposure to light are preventing flower formation. B. The room is too cold for a cactus plant, which requires hot, desert conditions to flower. C. Cacti are gymnosperms, not angiosperms, and thus do not form flowers. D. As a long-day plant, the cactus requires a high light to dark ratio to flower, so it must be exposed to more sunlight. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about flower production? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following is NOT a structure of
the middle ear?
a. eardrum b. anvil c. hammer d. cochlea e. all of these are structures of the middle ear
Which of the following scientists first
proposed the theory of uniformity?
a. Lyell b. Lamarck c. Darwin d. Cuvier e. Aristotle
Bacterial cell walls contain ________, which makes them different from other organisms
A) peptidoglycan B) pectin C) starch D) chitin E) cellulose