Human Digestive system

Which of the following correctly describes the purpose of digestion?

• To break down complex food molecules into simple soluble molecules

• To make complex food molecules from simple soluble molecules

• To make use of simple soluble food molecules

• To remove complex food molecules from the body

Large food molecules need to be broken down to be small enough to pass through cell membranes.

• True

• False

This is an image of the

• stomach
• small intestine
• esophagus
• large intestine

Why is the oesophagus muscular?

• To break the food into even smaller pieces

• To produce enzymes to digest food

• To push food from the mouth into the stomach

• To move the food back and forth in two directions

Where does carbohydrate digestion begins?

• liver

• mouth

• oesophagus

• stomach

Where does protein digestion begins?

• large intestine

• mouth

• small intestine

• stomach

Select all the enzymes present in the intestinal juice.

• amylase

• lipase

• maltase

• protease

Which of the following kills bacteria in the human alimentary canal?

• gastric juice

• mucus

• pancreatic juice

• saliva

A part of digestive system that secretes bile for emulsifying fats

• Liver

• Lungs

• Gall Bladder

• Pancreas

Which organ stores bile?

• stomach

• gallbladder

• pancreas

• liver