What do the three nonsense codons code for?
a. lysine
b. random
c. nothing
d. initiation factors
c. nothing
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In a particular case of secondary succession, three species of wild grass all invaded a field. By the second season, a single species dominated the field. A possible factor in this secondary succession was _____
A) equilibrium B) facilitation C) immigration D) inhibition E) parasitism
Which of the following is not true of the light-dependent reactions of photosynthesis?
A. They generate NADPH. B. They generate glucose from CO2 and H2O. C. ATP is generated by a chemiosmotic mechanism. D. The photons cause magnesium to release electrons. E. They occur in thylakoid membranes.
The rate of transpiration increases under all of the following conditions except:a
increased wind. b. increased humidity. c. increased temperature. d. presence of sunlight. e. an increase in dry air.
It has been observed that people with relatively high stress levels get a relatively high number of colds. What would this be an example of?
A) correlation B) experiment C) variable D) hypothesis