Cyanobacteria are prokaryotes that carry out oxygenic photosynthesis like green plants; this means that
A. they produce oxygen as a by-product of photosynthesis.
B. they have two distinct photosystems.
C. they use water as their electron source.
D. All of the choices are correct.
Answer: D
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Each tRNA has a(n) __________ that base-pairs with a codon, and each binds to the amino acid specified by the codon.
Fill in the blank(s) with the appropriate word(s).