Digestive System

Which of the following is NOT a function of the digestive system

• obtaining oxygen
• eliminating undigested wastes from the body
• breaking down food into molecules that the body can use
• absorbing food molecules into the blood

The process in which your body breaks down food into small nutrient molecules is called

• enzyme
• peristalsis
• digestion
• absorption

About how much water does the human body need in a day?

• 10 Liters
• 2 Liters
• 1 Liter
• 1/2 Liter

What materials are needed by your body in small amounts to carry out chemical processes?

• vitamins
• minerals
• vitamins and minerals
• None of these

Which nutrients are made up of amino acids?

• unsaturated fats
• saturated fats
• proteins
• carbohydrates

One role of fats is to

• link together to form proteins
• form part of the cell membrane
• act as helper molecules
• break down nutrients

The energy your body needs comes from

• water
• bones
• food 
• the brain

Which of the following are NOT among the six nutrients needed by the body?

• enzymes
• fats
• minerals
• water

What substance in the mouth contains an enzyme that begins chemical digestion?

• fiber
• mucus
• pepsin
• saliva

Chewing is an example of what kind of digestion?

• dental
• fragmentary
• chemical
• mechanical