The various types of chlorophyll differ in the
A. amount of light they can absorb.
B. amount of ATP they produce.
C. number of electrons they release.
D. amount of oxygen they utilize.
E. wavelengths of light they absorb.
Answer: E
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Mutations that inhibit the function of photosystem I but not photosystem II would result in a plant cell that could still generate ______.
A. produce O2, ATP, and NADP+ B. produce ATP and NADP+ C. produce O2, ATP, and NADPH D. produce ATP and NADPH E. produce CO2 and ATP
A horticulturist is breeding a new variety of houseplant in which two genes control leaf color. G (allele for green) is dominant to g (yellow) and B (second allele for green) is dominant to b (yellow). The recessive homozygous condition of either gene will mask a dominant allele. What color is a plant with the genotype GgBb? rev
A. green B. yellow C. an intermediate yellow-green D. variegated (yellow and green spots or stripes) E. The color cannot be determined with the information given.
Cilia lining the respiratory tubes beat mucus upward in order to:
a. moisten the bronchioles. b. conduct the mucus that contains particles to the pharynx and away from the lungs.
c. provide mucus to the lungs to prevent them from dehydrating. d. lubricate the throat for easier swallowing. e. promote gas exchange by providing mucus for the respiratory surfaces.
Many of the molecules that actively maintain the integrity of a cell's chromosomes, particularly during DNA replication and mitosis, are involved in crossing over during ____ of meiosis.
A. prophase II B. prophase I C. metaphase II D. metaphase I E. telophase II