The acceptance of the cell theory forced the rejection of what earlier concept?
A. That the Earth was at the center of the solar system.
B. That life could form by spontaneous generation.
C. That all life on Earth was immutable, which means unchanging.
D. That no species could clone itself as a means of reproduction.
Ans: B. That life could form by spontaneous generation.
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Gene flow
a. increases genetic diversity b. decreases genetic diversity c. has no effect on genetic diversity
The first humans appeared in the fossil record in the _____
a. paleocene b. eocene c. oligocene d. miocene e. pleistocene
Linoleic acid is an essential
A. amino acid. B. fatty acid. C. mineral. D. vitamin.
What effect will increased blood levels of ADH have on blood volume?
A) It will decrease blood volume. B) It will have no effect on blood volume because ADH affects only urine output. C) It will increase blood volume. D) Only the plasma (fluid) part of the blood will decrease.