Usually, enzymes are ________
A) fats
B) steroids
C) chemical reactions
D) proteins
D
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A plant is treated with a chemical that blocks the flow of electrons between photosystem II and photosystem I, such that protons are not transported from the stroma into the thylakoid compartment. What is the effect of this chemical on photosynthesis?
A. the increased number of protons will be directly used in the thylakoid to produce glucose B. an increased proton gradient will provide the energy needed to produce ATP from the light reactions C. a decreased proton gradient will cause less ATP to be produced from the light reactions D. the increased proton gradient will be used to make NADPH for the Calvin cycle 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 photo systems II and I and electron transport? What other information is related to the question? Choose Answer Do you have the necessary information to solve the problem? 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?
If the United States exports wheat to foreign countries that levy tariffs on wheat imports, the probable result is that the price of wheat will
a. fall in foreign countries. b. rise in the United States. c. rise in foreign countries. d. rise faster in the United States than in foreign countries.
Four of the five choices listed below can help a plant
wall off threats. Select the exception. a. centralized mechanisms b. phenols c. resins d. compartmentalization e. defensive compounds
What do Echinococcus granulosus, Entamoeba histolytica, and Enterobius vermicularis have in common?
A) They are transmitted by insect vectors. B) They live in the intestines of their definitive host. C) They are intracellular parasites. D) They cause zoonoses in humans. E) They are diagnosed by examination of a blood smear.