G6 U1 M2 L3 obtaining energy and removing waste

Removal of waste products in the body is called ________________.

• respiration

• excretion

• circulation

• transpiration

Your muscles use the food you eat as energy to contract.

• True

• False

Which type of digestion breaks down pieces of food into small molecules?

• mechanical digestion

• peristalsis digestion

• chemical digestion

• absorption digestion

The overall process of breaking down food so it can be used by the body is called ______________________.

• eating

• respiration

• circulation

• digestion

What is the role of the salivary glands in digestion?

• digest food

• produce saliva

• get rid of waste

• move food down the esophagous

How do plants obtain energy and get rid of waste?

• Digestion

• Roots

• Photosynthesis

• Light energy

What is the function of peristalsis?

• to move food through the digestive system

• to remove excess liquid from the body

• to chemically digest food to release nutrients

• to absorb nutrients into the blood

When does the first step of digestion usually occur?

• when the organism discovers the food

• when the food is chewed

• when the food is swallowed

• when the nutrients are absorbed

Food enters the human body through the _____.

• esophagus

• intestine

• mouth

• liver

Digestion begins in the mouth with chewing and ______________ beginning to break down food.

• esophagus

• stomach

• liver

• saliva