Aneuron's ability to generate action potentials depends: question 1 choices choice a., on the axon reaching threshold and the opening of voltage-gated sodium channels, allowing sodium to enter the axon. choice b., on the axon reaching threshold and the opening of voltage-gated sodium channels, allowing sodium to leave the axon. choice c., on the immediate opening of voltage-gated potassium channels once threshold has been reached, allowing potassium to leave the axon. choice d., on the immediate opening of voltage-gated potassium channels once threshold has been reached, allowing potassium to enter the axon.

Two male mice, which we will call male a and male b, are both phenotypically normal. male a was from a litter that contained half phenotypically normal mice and half dwarf mice. the mother of male a was known to be homozygous for the normal igf2 allele. male b was from a litter of eight mice that were all phenotypically normal. the parents of male b were a phenotypically normal male and a dwarf female. male a and male b were put into a cage with two female mice that we will call female a and female b. female a is a dwarf and female b is phenotypically normal. the parents of these two females were unknown, although it was known that they were from the same litter. the mice were allowed to mate with each other, and the following data were obtained: female a gave birth to three dwarf babies and four normal babies. female b gave birth to four normal babies and two dwarf babies. which male(s)mated with female a and female b? male a with both females male a with female b, and male b with female a male a with female a, and male b with female b could not be determined male b with both females

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above

Warmer ocean surface water would most likely be found near