While fumigating his house for insects, Phil became very nauseous. His vision went blurry as his pupils constricted and he began to have severe muscle spasms throughout his body. He also developed a runny nose and he began to salivate heavily. At the emergency room Phil was given injections of Atropine and Valium. Required:
a. What molecule is cholinesterase inhibiting?
b. What is ACh and where is it found? What is its function at the neuromuscular junction?
c. What is AChE and where is it found? What is its function?
d. What are the steps of excitation?

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

When water freezes, it . contracts expands

Temperatures in ponds and lakes vary by season. select the best answer from the choices provided t f