The most reliable source of all essential amino acids in humans is:
A. meat.
B. beans.
C. corn.
D. sunflower seeds.
E. Doritos.
A
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The adhesion step in extravasation is most likely to be mediated by:
A. integrin proteins. B. cell wall proteins. C. collagen. D. keratin.
According to researchers Parmesan and Yohe, how are living systems responding to anthropogenic
global warming?
a. All biomes are remaining intact and all are shifting their distributions northward. b. Some species are moving northward and others are not, so communities are being disrupted. c. All biomes are remaining intact, but some biomes are shifting their distributions and other biomes are not. d. Most plants are shifting their distributions northward, but most animals are not. e. Most animals are shifting their distributions northward, but most plants are not.
Which of the following is a key component of the cytoskeleton?
a. centrosome b. microtubules c. DNA d. ribosomes e. endoplasmic reticulum
In photosynthesis, when does the release of oxygen occur?
a) When photolysis occurs in the light reactions b) When carbon dioxide combines with ribulose-1, 5-bisphosphate (RuBP) c) During photophsphorylation d) When NADPH and ATP are fed into the Calvin Cycle