11bio Digestive Enzymes

What is the role of digestive enzymes?

• They store energy in food

• They speed up the breakdown of food

• They make food larger

• They absorb nutrients

Which of the following is NOT a digestive enzyme?

• Amylase

• Protease

• Lipase

• Insulin

Which enzyme is responsible for breaking down carbohydrates?

• Protease

• Lipase

• Amylase

• Pepsin

What type of molecule do proteases break down?

• Proteins

• Fats

• Carbohydrates

• Vitamins

Which enzyme helps break down lipids?

• Amylase

• Protease

• Lipase

• Pepsin

Where is amylase first secreted?

• Stomach

• Saliva in the mouth

• Liver

• Large intestine

What pH does amylase work best at in the mouth?

• 1.5–3

• 5–6

• 6.7–7.0

• 8–9

Where is trypsin secreted?

• Stomach

• Pancreas

• Large intestine

• Liver

Why does pepsin work best in the stomach?

• The stomach provides an acidic environment

• The stomach has the most enzymes

• The stomach adds bile

• The stomach absorbs amino acids

What pH does trypsin work best at?

• 1.5–3

• 4–5

• 7–8

• 9–10