What are the structural components of the human digestive system?

• C) Mouth, esophagus, small intestine

• B) Stomach, lungs, kidneys

• D) Brain, heart, spleen

• A) Mouth, liver, pancreas

How is food digested and absorbed?

• B) Through the respiratory system

• A) Through the skin

• C) Through the circulatory system

• D) Through the digestive system

Tags

NGSS.MS-LS1-7

How does food assimilation occur?

Tags

NGSS.MS-LS1-7

How does defaecation occur?

What is a balanced diet?

• C) Eating a variety of foods in the right proportions

• B) Eating only vegetables

• D) Eating only meat

• A) Eating only fruits

Can food be designed to meet the nutritional needs of humans?

• D) No, it is not necessary

• C) Yes, it is possible through cooking methods

• B) Yes, it is possible through genetic engineering

• A) No, it is not possible

What is the function of the villus in the ileum?

• C) Increase surface area for nutrient absorption

• B) Secrete digestive enzymes

• A) Absorb water

• D) Produce bile

Which enzyme hydrolyses starch to maltose in the mouth?

• D) Trypsin

• C) Salivary amylase

• A) Pepsin

• B) Lipase

What is the function of hydrochloric acid in the stomach?

Which enzyme hydrolyses lipids into fatty acids and glycerols in the small intestine?

• D) Lactase

• C) Lipase

• B) Sucrase

• A) Maltase