The extra amount of air that can be forced into and out of the lung is called the
A. tidal volume.
B. residual volume.
C. tidal wave.
D. vital capacity.
E. vital volume.
Answer: D
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Indicate whether this statement is true or false.
A molecule that gives up an electron becomes:
a. ionized only b. oxidized only c. reduced only d. both ionized and oxidized e. both ionized and reduced
A trait that confers a greater level of fitness, relative to those who lack it, is called a(n) ________
A) adaptation B) mutation C) variation D) allele E) None of the above.
It has been suggested that scientists should attempt to genetically engineer a plant to have black leaves so that it would perform photosynthesis more efficiently. What is the likely reason behind this idea?
A) Black plants would heat up faster and therefore all chemical reactions including photosynthesis would operate faster. B) A black plant would reflect all wavelengths and therefore have more energy to drive photosynthesis. C) A black plant would absorb all wavelengths and therefore absorb more light energy that powers photosynthesis. D) A black plant would absorb green wavelengths like most plants, but would absorb them more efficiently.