In nerve cells the sodium-potassium pump is used to generate gradients of both sodium and potassium ions to propagate electrical signals that travel along nerves. this is a(n) a) example of phagocytosis. b) active transport mechanism. c) passive transport mechanism. d) example of movement with the concentration gradient.

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Which benefit of the community experience when its members have a hide level of health literacy

What will happen if two of the base pairs of the stand of the dna are switched