Which statement concerning neurotransmitter release at the effector is true?
a. Preganglionic parasympathetic neurons release serotonin.
b. Preganglionic sympathetic neurons release norepinephrine.
c. Postganglionic parasympathetic neurons release norepinephrine.
d. Postganglionic sympathetic neurons release acetylcholine.
e. Postganglionic sympathetic neurons release norepinephrine.
e
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Where does karyogamy occur in zygomycetes?
a. basidia b. conidiophores c. sporangia d. asci e. zygospores
If light were prevented from reaching the right side of both retinas, which of the following would
occur?
a. The right half of the visual field would be lost. b. Only the left cerebral hemisphere would be stimulated by the light. c. No information about the light would be carried in the left optic nerve. d. The left half of the visual field would be lost. e. Sight would be lost.
Which base-pairing system is correct?
a. A to G; T to C b. A to T; G to C c. A to C; G to T d. A to T or C; G to C or A e. A to T or G; G to C or A
Abscisic acid stimulates the abscission of leaves
____________________ Indicate whether the statement is true or false.