General Science Class 7

Where chemical digestion of proteins start?

1. Oesophagus
2. Small intestine
3. Mouth
4. Stomach

Which structure prevents the food from entering the larynx during swallowing?

1. Epiglottis
2. Pharynx
3. Tongue
4. Oesophagus

During the swallowing of food:

1. The epiglottis opens
2. The glottis closes
3. The trachea dilates
4. The epiglottis closes

Food is normally digested in the:

1. Large intestine
2. Stomach
3. Small Intestine
4. Mouth

Which of the following is secreted by liver and stored in the gallbladder?

1. Saliva
2. Bile
3. Gastric juice
4. Pancreatic juice

____ acts as fats decomposers into smaller pieces in human digestive system.

1. Gastric juice
2. Pancreatic juice
3. Bile
4. Saliva

Absorption only occurs in:

1. Small Intestine
2. Large intestine
3. Stomach
4. Mouth

____ contains enzymes which help to digest proteins, fats and carbohydrates?

1. Pancreatic juice
2. Gastric juice
3. Saliva
4. Bile

Undigested food is expelled from the human body through:

1. Small intestine
2. Stomach
3. Large Intestine
4. Oesophagus

The water and mineral salts are absorbed in:

1. Large Intestine
2. Small intestine
3. Stomach
4. Oesophagus