Enzyme exam Qs

Question 1

Explain how the active site of an enzyme causes a high rate of reaction.

Answer 1

Lowers activation energy;
Induced fit causes active site (of enzyme) to change shape;
(So) enzyme-substrate complex causes bonds to form

Question 2

Describe how a peptide bond is formed between two amino acids to form a dipeptide.

Answer 2

Condensation (reaction) .
Between amine

Question 3

The secondary structure of a polypeptide is produced by bonds between amino acids.
Describe how.

Answer 3

different primary structure and held in place by i,h,di bonds in different shapes

Question 4

Formation of an enzyme-substrate complex increases the rate of reaction.
Explain how.

Answer 4

Reduces activation energy;
Due to bending bonds

Question 5

Urea breaks hydrogen bonds. Explain how the addition of urea would affect the rate of an
enzyme-controlled reaction.

Answer 5

these bonds maintain tertiary structure
tertiary structures destroyed
enzyme-substrate complex not formed