A uniform mixture is called a ____
a. concentration
b. salt
c. solute
d. solution
e. solvent
ANSWER: d
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A. methane. B. water. C. nitrogen. D. hydrogen. E. organic molecules.
Legionellosis is a Zoonosis
a. true b. false
Double fertilization occurs when
A. the sperm and tube nuclei fertilize the egg. B. one sperm fuses with the egg and the other sperm fuses with both polar nuclei. C. the polar nuclei fuse with the egg after it has fused with the sperm. D. two sperm cells fertilize the two polar nuclei.
Which stimulus would the brain interpret as the strongest?
A) 100 action potentials per second B) 5 action potentials per second C) 20 action potentials per second D) 50 action potentials per second E) 10 action potentials per second