Which is TRUE about amphipathic molecules when placed in an aqueous solution?
A. The interior portion is composed of hydrophilic hydrocarbon chains.
B. The outside portion is composed of hydrophilic head groups.
C. The interior portion is composed of hydrophobic hydrocarbon chains.
D. The interior portion of the micelle is composed of hydrophilic hydrocarbon chains and the outside portion of hydrophilic head groups.
E. The interior portion is composed of hydrophobic hydrocarbon chains and the outside portion of hydrophilic head groups.
E. The interior portion is composed of hydrophobic hydrocarbon chains and the outside portion of hydrophilic head groups.
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A biochemist wants to control the initial substrate-level phosphorylation that occurs in the tracheal cells of grasshoppers once glucose has crossed the plasma membrane. He has access to the following inhibitors: Rotenone - an electron transport chain inhibitor, Oligomycin - an ATP synthase inhibitor, and TLN-232, an inhibitor of glycolysis. Which inhibitor should he use to slow down initial substrate-level phosphorylation that occurs once glucose has crossed the plasma membrane?
A. Rotenone B. Oligomycin C. TLN-232 D. None of these inhibitors would be effective in preventing substrate-level phosphorylation 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 substrate-level phosphorylation during cellular respiration? What other information is related to the question? Choose Answer Do you have all the information needed to determine which inhibitor would have the biggest impact on substrate-level phosphorylation? 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?
When the solute concentration of solution A is lower than the solute concentration of solution B, solution A is considered
A. hypertonic. B. hypotonic. C. isotonic.
At the core of an herbaceous eudicot stem is:
a. pith. b. collenchyma. c. sclerenchyma. d. vascular cambium. e. phloem.
Hemopoiesis begins early in embryonic development in the
A) bone marrow. B) spleen. C) lymphatic organs. D) yolk sac.