A solution with a pH of 5 has how many more protons in it than a solution with a pH of 7?
A) 5 times
B) 10 times
C) 100 times
D) 1000 times
C
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In aerobic respiration, chemiosmotic generation of ATP is driven by:
A. Pi transfer through the plasma membrane. B. the Na+/K+ pump. C. a difference in H+ concentration on the two sides of the inner mitochondrial membrane. D. osmosis of macromolecules. E. large quantities of ADP.
Which one of the following would least likely be used during the initiation phase of translation?
A. elongation factors B. tRNA C. small ribosomal subunits D. initiation factors E. mRNA
The mitotic spindle is primarily composed of ____
a. actin b. intermediate filaments c. microtubules d. keratin e. motor proteins
If we wish to use a regression line to determine the effect of multiple treatment levels (e.g., Treatment = 1, 2, 3), why can't we just plot the average outcome for each treatment level and "connect the dots?"
A. This will cause us to have too few equations to solve for our unknown parameters. B. We cannot use a regression line to measure the effects of multiple treatments. C. Connecting the dots generally will not form a line. D. Using averages for each treatment level will generally create bias.