What was the benefit of the starling's adaptive behavior?
a. Decreased competition for nesting sites
b. Decreased mating competition.
c. Decreased predation.
d. Decreased competition for food.
e. Decreased parasitism on the fledglings from mites.
e
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9. Earthworms exhibit segmentation, defined as the
(a) division of the body into a series of similar segments. (b) presence of a true coelom. (c) difference in size of the male and female. (d) presence of a “head” equipped with sensory organs.
Which of the following statements is/are true? Choose all that apply
A. The energy of the starting materials for a reaction will equal the sum of energies of the products plus energy released as heat and disorder. B. The amount of useable energy resulting from a reaction will always be less than the total energy available in the starting materials. C. The entropy of the products of a reaction will always be greater than the entropy of the starting materials. D. The entropy of the starting materials for a reaction will always be greater than the entropy of the products.
During exhalation, the chest cavity ____ in size, which causes air pressure in the lungs to ____
a. increases; increase b. decreases; decrease c. increases; decrease d. decreases; increase e. expands, cause pressure
Enzymes that are only produced when substrate is present are termed ________.
A. induced enzymes B. constitutive enzymes C. exoenzymes D. conjugated enzymes E. endoenzymes