__________ such as reptiles control core temperature mainly by behavior. Fill in the blank(s) with the appropriate word(s)
Ectotherms
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Angiosperm carpels _____
A) are features of the gametophyte generation B) consist of anther and stamen C) are structures that directly produce male gametes D) surround and nourish the female gametophyte E) consist of highly modified microsporangia
Asexual reproduction in plants results in:
A. increased genetic diversity. B. offspring that are genetically different from the parent(s). C. offspring that are genetically different from each other. D. offspring that are genetically identical to the parent. E. no production of offspring.
Chemicals used for disinfection that are capable of disrupting cellular membranes and reduce the surface tension through cationic disruption of water molecules are termed:
a. alcohols. b. bleach. c. iodine or heavy metal compounds. d. quaternary ammonium compounds.
If a physician hears two "lub" sounds instead of one, then which of the following conditions is true?
a. The semilunar valves are not closing simultaneously. b. The atrial blood is flowing backward and causing the extra sound. c. The atrioventricular valves are not closing at the same time. d. The AV and semilunar valves are not closing at the same time. e. No such double sound has ever been heard.