Intracellular & Extracellular Enzymes

Question 1

What are intracellular enzymes?

Answer 1

enzymes that catalyse reactions inside cells

within the cell

Question 2

What are extracellular enzymes?

Answer 2

enzymes made inside cells but catalyse reactions outside of cells

usually exported by exocytosis

Question 3

What is an example of an intracellular enzyme?

Answer 3

catalas

2H2O2 -> 2H2O + O2

Hydrogen peroxide is a harmful waste product of cell metabolism

Question 4

What is an example of an extracellular enzyme?

Answer 4

e.g. amylase

starch -> maltose

made by cells in salivary glands and secreted into mouth / small intenstine

e.g. trypsin

long polypeptides -> short polypeptides

made in pancrease and secreted into small intenstine and hydrolyses peptide bonds