A female chooses a mate by
A. selecting the more aggressive and vigorous males.
B. selecting traits that improve the chances of offspring survival.
C. courtship display rituals.
D. All of the choices apply.
Answer: D
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The structure that confers structural strength on the cell is known as the
A) cytoplasmic membrane. B) cell wall. C) ribosome. D) cytoplasm.
________ is a predator that bores a hole through the outer membrane of its gram-negative bacterial prey and then reproduces in the periplasm.
A. Vampirococcus B. Daptobacter C. Syntrophobacter D. Bdellovibrio
Patients with mitochondrial disorders share many symptoms, such as muscle weakness, because mitochondria ________
a. organize the construction of muscle protein b. generate the ATP that is necessary for muscle contraction c. facilitate the transport of glucose across the muscle cell membrane d. store and then release the oxygen used during muscle contraction
Water covers about ____ of Earth's surface.
A. 33% B. 40% C. 50% D. 70% E. 80%