What type of chemical reaction must occur for electrons to flow from one molecule to the next and
supply the energy for metabolism?
a. acid/base
b. reduction/oxidation
c. exothermic
d. trimolecular
e. phosphorylation
B
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Progeria is a genetic condition that causes
a. pattern baldness as early as age twenty. b. socially inappropriate vocal outbursts and muscular twitches. c. a high incidence of cancer with any exposure to sunlight. d. muscular and mental deterioration shortly after puberty. e. premature aging which typically leads to death in the early teens.
A flap of tissue called the __________ directs air
through the __________, the opening to the __________ (windpipe). Fill in the blank(s) with the appropriate word(s).
What type of trait shows continuous variation, where there is a large range of phenotypes in a population (for example, height or skin color)?
What will be an ideal response?
A farmer noticed that two of her cotton plants produce cotton with a slight greenish hue. By repeatedly crossing the greenish plants, she has produced a variety of deep-green cotton without the use of any dyes. This is an example of
A) convergent evolution. B) natural selection. C) artificial mutation. D) artificial selection. E) inheritance of acquired characteristics.