Honeybees are ________ because they transfer pollen from one plant to another
a. pollinators
b. polluters
c. transporters
d. impregnators
e. reproducers
a
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Which statement best describes the concept of alternation of generations?
(a) One generation of plants is skipped every other year. (b) There are two phases, a sporophyte and a gametophyte. (c) The parental generation alternates with a juvenile generation. (d) A green sporophyte phase produces food for a nongreen gametophyte.
If you want to know the probability that tossing two coins will result in a particular outcome (two heads, for example), you use the
A. punnett rule. B. product rule. C. sum rule. D. genetics rule. E. Bergman's rule.
In using Agrobacterium tumefaciens to transfer genes into plants, what is transferred from bacterium to plant?
A) Ti plasmid B) T-DNA C) opines D) only the recombining sequence E) the entire bacterium
Ouabain is a chemical used on poison arrows in Africa. It works by inhibiting the sodium-potassium pump. What effect does this chemical have on an action potential?
A) It causes the release of a neurotransmitter that causes an action potential. B) It prevents the stimulation of an action potential by removing sodium from the cell. C) It immediately causes an action potential to be generated. D) There is no direct effect because the pump is used to maintain ion distributions, not to cause an action potential.