Digestion in humans

Multiple Choice

Which organ churns food and uses acid and enzymes to break down food?

• stomach

• esophagus

• mouth

• epiglottis

Multiple Choice

What is the function of the teeth and tongue

• chemical digestion

• break down food

• mechanical digestion

• they only chew food

Multiple Choice

Which enzyme below is involved in the following chemical digestion process?
FATS---->FATTY ACIDS/GLYCEROL

• Lipase
• Trypsin
• Amylase
• Pepsin

Multiple Choice

Pepsin is an enzyme that acts on

• lipids
• proteins
• carbohydrates
• nucleic acids

Multiple Choice

Where does the digestion of starch begin?

• esophagus
• small intestine
• stomach
• mouth

Multiple Choice

Proteases causes digestion of

• carbohydrates

• proteins

• fats

• fibres

Multiple Choice

Emulsification of fats occurs by the action of

• pancreatic juices

• amylase

• bile

• lipases

Multiple Choice

In stomach, which of the following change will occur

• Proteins are converted into polypeptides

• starch is converted into maltose

• fats are converted in fatty acids and glycerol

• maltose is converted into glucose

Multiple Choice

Amylase converts

• Starch into maltose

• starch into glycogen

• starch into glucose

• none of them

Multiple Choice

Finger like projection in small intestine are known as

• cilia

• villi

• alveoli

• none of them

Multiple Choice

Where does the digestion of carbohydrates take place?

• Mouth

• Mouth and Stomach

• Mouth and small Intestine

• Mouth and large intestine

• Stomach

Multiple Choice

What is the aim of the digestion?

• Obtain matter and energy

• Obtain nutrients from food and break it down into small molecules, which are then absorbed

• Break down food into inorganic nutrients

• Obtain nutrients form food and transport it to the cells

Multiple Choice

What is the enzyme contained in the saliva?

• Amylase

• Pepsine

• Hydrochloride acid

• Lipase

Multiple Choice

The lining of the small intestine is folded which

• Increases surface area of the small intestine

• Allows for slower passage of food molecules into the small intestine.

• Allows for more nutrient absorption.

• All of the above