In green plants, which photosystem absorbs photons to excite electrons in the reaction center?
A. photosystem I
B. photosystems I, II and III
C. photosystems I and II
D. photosystem III
E. photosystem II
Answer: C
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The rate of diffusion of molecules would be fastest in a cell with an
A. internal concentration of 45 percent and an external concentration of 50 percent in cold temperatures. B. internal concentration of 50 percent and an external concentration of 12 percent in cold temperatures. C. internal concentration of 50 percent and an external concentration of 12 percent in warm temperatures. D. internal concentration of 40 percent and an external concentration of 35 percent in warm temperatures. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you know about factors that affect the rate of diffusion? What other information is related to the question? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
What would be the most direct result of an individual having an inability to produce surfactant in their alveoli?
A. The alveoli would physically collapse. B. The alveoli would be much more likely to harbor infections. C. The alveoli would fill with fluid due to an ion transport defect. D. Oxygen exchange with the blood would be impaired due to a thickening of the epithelium. E. Carbon dioxide exchange with the blood would be impaired due to an inhibition of carbonic anhydrase.
Plasma is also called lymph.
Answer the following statement true (T) or false (F)
Hyphae are associated with which of the following?
A. yeasts B. algae C. molds D. protozoa E. helminths