Invertebrates that feed on coarse particulate organic matter (CPOM), such as leaves that fall into streams and rivers, are referred to as
A) shredders.
B) gougers.
C) grazers.
D) collectors.
A
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Stomach cells are moderately well adapted to the acidity and protein-digesting activities in the stomach by having _____
A) a sufficient colony of H. pylori B) a thick, mucous secretion and active mitosis of epithelial cells C) a high level of secretion of enzymes by chief cells D) a high level of secretion of bases from parietal cells E) a cell wall impermeable to acid
In skeletal muscle contraction, an increase in ____in the cytosol triggers the crossbridge cycle
a. troponin b. Ca2+ c. tropomyosin d. ATP e. acetylcholine
High stomach acidity
a. creates ideal conditions for carbohydrate digestion. b. promotes emulsification of fats. c. favors protein digestion. d. blocks the release of histamine, thereby favoring production of peptic ulcers. e. converts lipases into their active forms.
Which term is given to the measure of the proportion of offspring that a particular phenotype will contribute to the next generation?
What will be an ideal response?