14. Human digestive system part 1

Which of the following is NOT a type of nutrient?

• carbohydrate

• fat

• lipase

• protein

Which of the following statements about physical digestion is FALSE?

• Physical digestion involves the break up of food molecules

• Physical digestion occurs when teeth grind food into smaller pieces

• Saliva is not an essential part of physical digestion

• Physical digestion decreases the surface area to volume ratio of food

Which of the following correctly shows where a food molecule is digested?

• A

• B

• C

• D

Chemical digestion is important to the body as _____________.

• it breaks down food into simpler molecules for absorption

• it prevents an increase in blood sugar level

• it minimizes the chances of food poisoning

• it involves the action of enzymes

Which of the following substances is/are absorbed in the large intestine?

• mineral salts only

• water only

• water and mineral salts

• water and nutrients

What does the stomach produce to aid digestion?

• Proteases and carbohydrases

• Proteases and hydrochloric acid

• proteases and lipases

• proteases and sodium hydroxide

What is the order in which food passes through the organs in the digestive system?

• A

• B

• C

• D

In which part of the digestive system does absorption of substances NOT occur?

• Oesophagus

• large intestine

• small intestine

• none of the above