role of enzymes and food tests/

Question 1

why can enzymes be described as biological catalysts?

Answer 1

Enzymes are proteins functioning as catalysts that speed up reactions by lowering the activation energy.

Question 2

why do enzymes only catalyse one reaction?

Answer 2

Each enzyme will only speed up one reaction as the shape of the enzyme molecule needs to match the shape of the molecule it reacts with.

Question 3

what does it mean when an enzyme has been denatured?

Answer 3

The enzyme is a protein, and at high temperatures, the shape of the protein is altered, preventing it from performing its function.

Question 4

list three places where amylase is made in the body

Answer 4

small intestines, pancreas, salivary gland

Question 5

what is the role of lipase

Answer 5

to break down fat molecules

Question 6

where is bile stored

Answer 6

gall bladder

Question 7

name the solution’s that you would use to test for the presence of lipids

Answer 7

iodine