Amino acids and enzymes

Question 1

Proteins have a sequence of

Answer 1

amino acids that make each protein distinct

Question 2

The sequence is made up of

Answer 2

chemically different side chains

Question 3

primary structure of a protein

Answer 3

refers to the sequence of amino acids

Question 4

secondary structure refers to

Answer 4

the folding of the protein chain into alpha helices and beta sheets

Question 5

tertiary structure refers to

Answer 5

the overall 3D shape of the protein

Question 6

Changes in temperature and pH can

Answer 6

greatly influence the intra and intermolecular bonds that hold the protein together

Question 7

Enzymes are

Answer 7

proteins that act as catalysts in biological reactions

Question 8

The active site of an enzyme

Answer 8

binds substrate and performs catalysis

Question 9

Enzymes can have a non-protein part called

Answer 9

a cofactor or prosthetic group

Question 10

Enzymes reduce the

Answer 10

activation energy of a reaction, increasing the rate of the reaction

Question 11

Enzymes can act in both the forward and reverse directions, since

Answer 11

both require passing through the same transition state

Question 12

Without enzymes, reactions

Answer 12

would occur too slowly to sustain life