Which of the following is an excitatory neurotransmitter secreted by motor neurons innervating skeletal muscle?
a) norepinephrine
b) gamma aminobutyric acid
c) acetylcholine
d) cholinesterase
c) acetylcholine

Question 4 using myplate's daily food plant for 2000 kilocalories as a reference, the servings from the protein foods group in this menu are a. adequate overall, and consistent with the dietary guidelines 2010 recommendations. b. short 2 ounce equivalents. c. inadequate in terms of the recommendations for a 2000 kcal diet. d. adequate overall, but inconsistent with the dietary guidelines 2010 recommendations.

An animal cell (left) and a plant cell (right) are shown. which organelle, labeled x in the diagram, is found in both plant and animal cells?

Involving transcription and translaton. explain the causes and effects of damage to the genetic code.