The structure(s) critical to the function of a chemical synapse include
A. vesicles.
B. neurotransmitters.
C. gap junctions.
D. voltage-gated Ca2+ channels.
E. electrical signals.
Answer: D
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The RNA molecule involved in both transcription and translation is _____________. Fill in the blank(s) with the appropriate word(s)
Cnidarians have two basic body forms, medusae and ________.
Fill in the blank(s) with the appropriate word(s).
The ________ approach to gene cloning employs a mixture of fragments from the entire genome of an organism and results in the production of thousands of different recombinant plasmids
A) shotgun B) genetic engineering C) restriction D) cloning
Which of the following is an adaptation that helped plants move from aquatic environments to the land?
A) seeds B) a cuticle C) swimming sperm D) pollen