The resting potential of a neuron is maintained by _____
the myelin sheath
acetylcholine
the sodium-potassium pumps
neuroglial cells
C. the sodium-potassium pumps
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Aug
A. is only used as the start codon. B. codes for methionine. C. determines the reading frame. D. is one of the stop codons. E. codes for methionine AND determines the reading frame.
Each DNA nucleotide is composed of ____
a. a six-carbon sugar, a phosphate group, and one of twenty amino acids b. a five-carbon sugar, a nitrogenous base, and one of twenty amino acids c. a five-carbon sugar, a phosphate group, and one of four nitrogenous bases d. a six-carbon sugar, a nitrogenous base, and one of four amino acids e. a five-carbon sugar, a phosphate group, and one of four amino acids
What reward do many organisms receive for pollinating flowers?
A) protection from predators B) no reward C) nectar D) fruit
Single plant cells can be stimulated to become a callus and then further stimulated to become a new entire plant.
Answer the following statement true (T) or false (F)