In making an active prediction it is advantageous for the relationship being predicted to be of what sort?
A. Unbiased
B. Efficient
C. Confounding
D. Causal
Answer: D
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Some marine species of cyanobacteria
A. do not have flagella and are, therefore, nonmotile. B. do not have flagella but are, nonetheless, motile by some unknown mechanism. C. do not have flagella but are motile by means of pseudopods. D. have flagella and are, therefore, motile.
The pollen-producing body of a flower is the
A. ovary. B. stigma. C. anther. D. sepal. E. style.
What product of the light-dependent reactions is released directly into the environment?
a. O2 b. electrons c. NADPH d. ATP e. hydrogen ions
In the small intestine, food molecules pass from the lumen of the intestine into the individual cells lining the intestine and then into the circulatory or lymph system of the body. If the digested molecules can leak into the abdominal cavity then ________ must have been damaged.
A. hemidesmosomes B. desmosomes C. tight junctions D. gap junctions E. focal adhesions