At what point in this action potential diagram does the onset of Na+ channel inactivation stop the
inward flow of Na+?
a. A
b. B
c. C
d. D
e. E
B
You might also like to view...
In a dihybrid cross using Mendelian inheritance, if both parents are heterozygous for both traits, what will be the phenotypic ratio of their offspring?
A. 3:1 B. 1:2:1 C. 1:1 D. 9:3:3:1
Which of the following could result in the most serious type of mutation?
A. A nucleotide substitution in an exon. B. A nucleotide deletion in an exon. C. A nucleotide insertion in an intron. D. A nucleotide substitution in an intron. E. More than one of these would be most serious.
A primary transcript (immature, non-processed) single-stranded RNA molecule has the following nucleotide composition: 30% A, 20% G, 24% C, and 26% U. What is the nucleotide composition of the double-stranded DNA molecule from which it was transcribed?
a. 28% A, 22% G, 22% C, and 28% T b. 20% A, 30% G, 26% C, and 24% T c. 26% A, 24% G, 20% C, and 30% T d. 30% A, 20% G, 24% C, and 26% T e. 26% A, 24% G, 20% C, and 30% U
Which of the following statements is (are) correct about an oxidation-reduction (or redox) reaction?
A) The molecule that is reduced gains electrons. B) The molecule that is oxidized loses electrons. C) The molecule that is reduced loses electrons. D) The molecule that is oxidized gains electrons. E) Both A and B are correct.