A higher protein concentration within the distal portion of capillaries draws water into them through the process of
A. osmosis.
B. diffusion.
C. filtration.
D. facilitated diffusion.
E. active transport.
Answer: A
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Only a small percentage of the energy produced by the sun is actually used by living organisms. What percentage of energy produced by the sun is captured by photosynthetic organisms
Humans are susceptible to scurvy because
A. they do not have enough adipose tissue for vitamin A storage. B. they cannot synthesize vitamin C. C. they have a high incidence of fruit allergies. D. constant seasickness and nausea on long voyages leads to weakness and anemia. E. they cannot synthesize amino acids.
You observe a pine with two distinctly different types of cones. The best explanation for this is
A. the tree was produced by grafting. B. a mutation has occurred in this plant. C. one cone is the male reproductive structure and the other is the female reproductive structure. D. one cone is a gametophyte and the other is a sporophyte.
If a heterotrophic bacterium were grown in a minimal glucose medium and transferred during exponential growth phase into the complex LB medium, the cell would have a relatively
a. short exponential phase because it already is in exponential growth phase. b. high growth yield compared to cells transferred during stationary growth phase. c. long lag phase because it has to adjust to a different chemical environment/medium. d. short lag phase because of the availability of amino acids and other nutrients.