Immunity ____
a. is always adaptive
b. is an organism's ability to resist and combat infections
c. evolved after the emergence of multicellular organisms
d. is only found in mammals
e. is not specific for any given pathogen
ANSWER: b
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The process by which cells break down complex molecules in the presence of oxygen to release energy is called ____
a. anabolism b. photosynthesis c. metabolism d. translation e. cellular respiration
The embryo develops from cells of the
a. blastocyst outer layers. b. blastocyst inner cell mass. c. gastrula mesoderm. d. gastrula ectoderm. e. gastrula endoderm
Anaerobic methanogens produce ____
a. carbon monoxide b. carbon dioxide c. ammonia sulfide d. methane e. hydrogen sulfide
If a cell was capable of bypassing metaphase and going directly from prometaphase to anaphase, what is the most likely consequence of this?
A. The resulting daughter cells would be completely normal. B. The resulting daughter cells would have different numbers of chromosomes. C. The resulting daughter cells would not have a nuclear envelope. D. The resulting daughter cells would have significantly different quantities of cytoplasmic materials.