PHS Edexcel cB1 - Enzymes

Which type of enzyme breaks down large carbohydrates, such as starch?

• starchase

• protease

• amylase

• lipase

What substance can we use to test for the presence of starch?

• methylene blue

• litmus

• iodine

• universal indicator

Which type of enzyme breaks down proteins?

• protease

• amylase

• lipase

Which type of enzyme breaks down lipids (fats)?

• protease

• amylase

• lipase

What does amylase digest starch molecules into?

• fatty acids

• glucose

• amino acids

• glycerol

What does protease digest protein molecules into?

• fatty acids

• glucose

• amino acids

• glycerol

What does lipase digest lipid molecules into?

(more than one answer needed)

• fatty acids

• glucose

• amino acids

• glycerol

What do we call the molecule that the enzyme breaks down?

• substrate

• sub

• food

• substance

What do we call the part of the enzyme that attaches to the substrate?

• specific site

• substrate site

• enzyme site

• active site

What happens to an enzyme's active site if the temperature increases too much?

• it changes shape

• it starts to bubble and fizz

• nothing

• it changes colour