GRADE 8 SCIENCE – DIGESTIVE SYSTEM TEST

Which of the following organs is where digestion begins?

• Stomach

• Esophagus

• Mouth

• Small intestine

What type of digestion involves breaking down food with the help of enzymes?

• Mechanical digestion

• Peristalsis

• Chemical digestion

• Ingestion

Which enzyme is found in saliva?

• Pepsin

• Amylase

• Lipase

• Trypsin

The bolus is pushed down to the stomach through a wave-like muscle action called:

• Ingestion

• Peristalsis

• Contraction

• Relaxation

What protects the windpipe when swallowing food?

• Tongue

• Palate

• Epiglottis

• Uvula

What is the semi-liquid form of food in the stomach called?

• Mucus

• Bolus

• Chyme

• Bile

What acid in the stomach helps kill bacteria and digest proteins?

• Lactic acid

• Acetic acid

• Hydrochloric acid

• Nitric acid

Which of the following organs stores bile?

• Liver

• Gallbladder

• Pancreas

• Stomach

Which of the following helps break down fats?

• Pepsin

• Amylase

• Bile

• Mucus

Which part of the small intestine is mainly responsible for neutralizing acid from the stomach?

• Jejunum

• Duodenum

• Ileum

• Rectum