If the frequency of expression of a recessive trait in a population is 16 percent, the frequency of the recessive allele is what percent?
A. 16
B. 25
C. 40
D. 50
E. 67
Answer: C
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Which stage of photosynthesis, if any, can function in the dark?
A. Stage 2 (the Calvin cycle) B. Stage 1 (the light reactions) C. Both Stage 1 (the light reactions) and Stage 2 (the Calvin cycle) D. Neither Stage 1 (the light reactions) nor Stage 2 (the Calvin cycle)
Epithelial cells are specialized for four of the five following functions. Select the exception
a. secretion b. protection c. diffusion d. contraction e. absorption
An element is defined as a substance that:a
is composed of more than one kind of atom. b. is held together by covalent bonds. c. cannot be broken into simpler substances by chemical reactions. d. cannot burn. e. is soluble in both acid and base.
What is the main reason that the oceans play a larger role than land masses in determining the temperature of air masses?
A. The ocean currents move in a circular pattern while land masses are stationary. B. The ocean holds its temperature longer than land masses. C. The ocean is flat while land masses have topographical features to break up air patterns. D. The ocean currents are constantly moving while land masses are stationary.