Enzymes

Question 1

catalyst

Answer 1

a substance that speeds up a reaction without changing the substances produced or being changed itself

Question 2

enzymes

Answer 2

proteins that act as biological catalysts for a specific reaction or group of reactions

Question 3

specificity

Answer 3

the characteristic of enzymes that means that each enzyme will catalyse only a specific reaction or group of reactions; this is due to the very specific shapes which come from the tertiary and quaternary structures

Question 4

anabolic reactions

Answer 4

a reaction that builds up (synthesises) new molecules in a cell

Question 5

catabolic reactions

Answer 5

a reaction which breaks down substances within a cell

Question 6

metabolism

Answer 6

the sum of anabolic and catabolic processes in a cell

Question 7

metabolic chain (metabolic pathway)

Answer 7

a series of linked reactions within the cell

Question 8

intracellular enzymes

Answer 8

enzymes that catalyse reactions within the cell

Question 9

extracellular enzymes

Answer 9

enzymes that catalyse reactions outside of the cell in which they were made