proteins

Question 1

what are enzymes ?

Answer 1

proteins which act as biological catalysts

Question 2

what are proteins formed from and what is their structure?

Answer 2

proteins are formed from amino acids, which are small molecules with an amino group (nh2) and a carboxyl group (cooh)

Question 3

how are proteins formed ?

Answer 3

the condensation of amino acids, in which the amino group of one amino acid and the carboxyl group of another amino acid join, with the elimination of water.

Question 4

—CONH— is what ?

Answer 4

an amide or peptide link

Question 5

how are proteins digested?

Answer 5

by enzyme hydrolysis into amino acids

Question 6

what are essential amino acids?

Answer 6

amino acids required for protein synthesis that the body cannot produce and thus must obtain through diet.

Question 7

what happens to proteins when they are heated ?

Answer 7

the intermolecular bonds between the side chains of constituent amino acids within the protein are broken, making the proteins change shape (denature)

Question 8

what does denaturing a protein do in foods?

Answer 8

changes the texture of the food.