A population that is decreasing in size will have an age-structure histogram shaped like a(n):
A. pyramid, with a wide base at the bottom
representing a large number of young
individuals.
B. rectangle, with an (roughly) equal number
of individuals in each age group.
C. inverted pyramid, with a narrow base
representing a small number of young
individuals.
D. diamond, with a wide center depicting a
large number of individuals that have reached
reproductive maturity.
C
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What would happen to protons that reenter the mitochondrial matrix?
a. They are attached to NAD+ and FAD. b. They combine with oxygen to form water. c. They synthesize ATP by substrate-level phosphorylation. d. They help in the production of CO2. e. They regenerate Coenzyme A.
In plants, the gametes produced by a particular gametophyte are
a. always identical because they result from meiosis. b. always identical because they result from mitosis. c. sometimes identical because they result from meiosis. d. sometimes identical because they result from mitosis. e. never identical because they result from meiosis.
Fertilization of the ovum occurs in the _______ .
a. ovary b. uterus c. follicle d. fallopian tube
Taxonomy is the branch of biology that deals with
A. naming organisms. B. classifying organisms. C. the anatomy of organisms. D. the biochemistry of organisms.