A molecule of chlorophyll increases in potential energy:
a) when it binds to a photon.
b) when it loses an electron.
c) when one of its electrons is boosted to a higher-energy excited state after absorbing a photon of light.
d) None of the above. The potential energy of a molecule cannot change.
Ans: c) when one of its electrons is boosted to a higher-energy excited state after absorbing a photon of light.
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A. polypeptide ... monomers B. carbohydrate ... fatty acids C. polymer ... glucose molecules D. protein ... amino acids E. lipid ... triacylglycerols
Compared with a smaller cell, a larger cell of the same shape has _____
A) less surface area B) less surface area per unit of volume C) the same surface-area-to-volume ratio D) a smaller average distance between its mitochondria and the external source of oxygen E) a smaller cytoplasm-to-nucleus ratio
An advantage of sexual reproduction is:
a. a large number of offspring. b. genetically diverse offspring. c. offspring that are specially adapted to the stable environment of their parents. d. offspring that are genetically identical to the parents.
What term is used to indicate a relatively new characteristic, in an evolutionary sense?
a. homologous trait b. analogous trait c. cladistic trait d. ancestral trait e. derived trait