The exponential growth rate of a population
under ideal conditions is its
a. carrying capacity.
b. logistic growth.
c. biotic potential.
d. realized niche.
e. density dependence
C
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Dyes are usually added to sections of biological specimens to increase
(a) resolving power. (b) magnification. (c) contrast. (d) all of the above.
Vectors can transfer ____
a. DNA sequences into bacterial host cells for cloning b. DNA sequences into viral host cells for cloning c. cloned viral cells into a bacterial host for cloning d. cloned mitochondria from donor cell to host cell e. cloned chromosomes from the nucleus of a cell into its cytoplasm
Ribose differs from deoxyribose by having:a
two attached bases. b. one less oxygen. c. an extra hydroxyl group. d. an extra carbon in the ring. e. one less carbon in the ring.
The placenta forms from embryonic tissue and
A) bone marrow. B) amniotic fluid. C) the embryonic disk. D) endometrium. E) the yolk sac.