In Figure 16.1, how many mL is the inspiratory reserve volume?
A) 1700
B) 2200
C) 1300
D) 600
E) 2800
Answer: B) 2200
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Which of the following statements is true about the Galapagos finches?
a. Because of the different beak shapes, there is little niche overlap. b. Interspecific competition has eliminated niche overlap. c. Because of niche overlap, a dominance hierarchy has been established. d. Intraspecific competition is likely minimal because of the differences in beak shape.
Evolution by natural selection is
A) a process that has occurred only in the past. B) currently occurring but only in scientific laboratories. C) constantly occurring at the same rate in all organisms. D) a rare event that has never been observed by scientists. E) a process that occurs as a result of differences in fitness.
Which of the following statements is not true?
A.) when a carbon atom in a C-H bond has somewhat more than its share of electrons, it is said to be reduced B.) hydrogenation reactions are oxidations, and dehydrogenation reactions are reductions C.) when a sugar molecule is oxidized to CO2 and H2O, the O2 molecules involved in forming the H2O are reduced D.) oxidation and reduction reactions always occur simultaneously
Which of the following statements is true?
(a) Ribosomes are large RNA structures composed solely of rRNA. (b) Ribosomes are synthesized entirely in the cytoplasm. (c) rRNA contains the catalytic activity that joins amino acids together. (d) A ribosome binds one tRNA at a time.