The ________ is the electron acceptor in a redox reaction.
A. oxidant
B. product
C. enzyme
D. reductant
Answer: A
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Which of the following statements is not correct?
a. Energy cannot be created or destroyed. b. Energy cannot change from one form to another. c. Energy tends to disperse spontaneously.
Which hormones are produced by the hypothalamus but secreted by the posterior pituitary gland?
A. oxytocin and antidiuretic hormone. B. thyrotropin-releasing hormone and corticotropin-releasing hormone. C. prolactin and growth hormone. D. prolactin and vasopressin. E. follicle-stimulating hormone and leutenizing hormone.
A predator-prey relationship, such as between roadrunners and lizards
a) is usually a cause of extinction of one of the species b) leads to related increases and decreases in the populations of both species c) represents competition between species d) contributes to exponential growth of the predator species
Inside the corolla is a whorl of ____, the organs that produce male gametophytes.
A. sepals B. petals C. carpels D. ovaries E. stamens