A decapeptide was analyzed and the following information obtained. Determine the primary structure of the peptide. Edman's Degradation: PTH-Val
Carboxypeptidase A: no reaction
Trypsin produces 2 peptides of the following composition:
1. Ala, Lys, Val
2. Arg, Gly, Met, Phe (2), Pro, Ser
Chymotrypsin produces 2 peptides of the following composition:
1. Ala, Gly, Lys, Phe (2), Pro, Ser, Val
2. Arg, Met
Elastase produces 2 amino acids and 3 peptides
1. Arg, Phe, Met
2. Lys, Ser
3. Gly, Phe, Pro
4. Val
5. Ala

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

Which situation is an example of not doing work? lifting a couch throwing a baseball running up stairs carrying a box