Which of the following statements about mitochondrial chemiosmosis is NOT true?
(A) A proton gradient is established across the inner membrane of the mitochondrion.
(B) The potential energy released from the mitochondrial proton gradient is used to produce ATP.
(C) The mitochondrial proton gradient provides energy for muscle contraction.
(D) Proteins embedded in the inner mitochondrial membrane play an important role in ATP synthesis.
(E) Heat energy is required to establish the electron transport chain.
Answer: (E) Heat energy is required to establish the electron transport chain.
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1.hypothalamus 2.pineal gland 3.pituitary gland 4.thymus
The situation in which an active regulatory protein "turns off" gene expression is an example of
A) a mutation. B) positive control. C) negative control. D) constitutive gene elements. E) unique regulation.
Refer to the accompanying figure. Reabsorption of solutes with nutritional value occurs at the point labeled as:
a. 1. b. 3. c. 5. d. 6. e. 9.
Plants are the ________ in the food chain in an ecosystem.
Fill in the blank(s) with the appropriate word(s).