The Digestive System 1

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

• minerals
• water
• fats
• enzymes

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

• ten liters
• one liter
• half a liter
• two liters

According to nutritionist, which food group should be eaten in very limited amounts?

• bread, cereal, rice, and pasta

• vegetables

• fats, oils, and sweets

• milk, yogurt, and cheese

What structure(s) enable(s) the small intestine to absorb large amounts of nutrients?

• pancreas
• liver
• villi
• gall bladder

Which process takes place in the large intestine?

• Water is added to undigested food.
• Enzymes are added to complete chemical digestion.
• Water is absorbed from undigested food.
• Digested nutrients are absorbed through the villi.

A calorie is a unit used to measure

• minerals.
• vitamins.
• energy.
• temperature.

Which nutrients are made up of amino acids?

• unsaturated fats
• carbohydrates
• saturated fats
• proteins

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

• mucus
• saliva
• pepsin
• fiber

About how much of a human’s body weight is made up of water?

• 10 percent
• 65 percent
• 25 percent
• 90 percent

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

• peristalsis.
• enzyme.
• absorption.
• digestion.