Plants use photosynthesis to
A) store chemical energy, and they use cellular respiration to harvest energy.
B) change light energy into chemical energy as well as to harvest chemical energy.
C) harvest energy, and they use cellular respiration to store chemical energy.
D) change light energy into sugars.
A
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A) may change as environmental conditions change B) can be accurately calculated using the logistic growth model C) generally remains constant over time D) increases as the per capita growth rate (r) decreases E) can never be exceeded
The semipermeable structure controlling the transport of materials between the cell and its external environment is the:
A) cell membrane. B) cell wall. C) cytoplasm. D) nuclear membrane.
Which bacterial structure may survive if temperatures applied during food preservation processes are too low?
A. Endospores B. Plasma membranes C. Ribosomes D. Flagella
Which of the following cancer treatments is LEAST likely to kill healthy cells?
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