Proteins and Enzymes

Question 1

State the feature of a protein that determines its molecular shape and the function it can carry out

Answer 1

Sequence of Amino acids

Question 2

Give 4 protein groups that have different functions

Answer 2

Structural units, Enzymes, Hormones, Receptors and Antibodies

Question 3

State why enzymes are described as biological catalysts

Answer 3

Speed up chemical reactions in living organisms

Question 4

State the effects of catalysing a reaction on an enzyme molecule’s structure

Answer 4

Molecular structure unchanged

Question 5

State why living cells require enzymes

Answer 5

Otherwise reactions would be too slow to maintain life

Question 6

Give the term used for the substance on which an enzyme works

Answer 6

Substrate

Question 7

Name the part of an enzyme molecule that binds to its substrate

Answer 7

Active Site

Question 8

Give 2 different conditions that could lead to the denaturing of enzyme molecules

Answer 8

Extremes of temperature or differences in pH