Approximately, how many varieties of edible apples existed in the days of Johnny Appleseed?
a. 6
b. 16
c. 160
d. 1600
e. 16,000
ANSWER: e
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Carbohydrates are composed of:
A. amino acids. B. fatty acids and glycerol. C. nucleotides. D. monosaccharides.
Explain why an individual lymphocyte clone that interacts with a specific LPS constituent of Salmonella will not react with the LPS of other bacteria
What will be an ideal response?
In a particular layer of rock, a number fossilized ferns are found, but no fossilized mosses are found. What conclusions can be drawn from this finding?
A. The soft tissues of mosses may not have fossilized as readily as the lignified tissues of ferns, so it is difficult to draw any conclusions from this limited sample. B. Mosses and ferns did not coexist in the same environment. C. There are fewer species of moss than ferns. D. Ferns evolved earlier than mosses, so it is not surprising to find a layer with only ferns and no mosses. E. Ferns decompose more rapidly than mosses and thus are more likely to fossilize.
Sponge cells capture nutrients in the form of _____ by the process of _____
A. macromolecules; diffusion and active transport B. food particles; diffusion and active transport C. macromolecules; endocytosis D. food particles; endocytosis E. micromolecules; diffusion and active transport