Digestive System Review

Multiple Choice

The mouth, stomach, and small intestine use

• Chemical digestion

• Chemical and Physical Digestion

• Physical Digestion

• Neither

​CHEMICAL DIGESTION

Multiple Choice

Enzymes represent what they of reaction?

• physical

• chemical

Multiple Choice

What substances are used in chemical digestion??

• Enzymes, stomach acid, and teeth

• Muscles, teeth, and enzymes

• Stomach acid, muscles

• Enzymes and stomach acid

​Gases can build up in the small intestine when you digest food. The body needs to get rid of the build-up by farting (flatulence) or burping (belching)

Multiple Choice

Flatulence (farts) build up due to

• Swallowing big pieces of food

• Eating fries

• chemical digestion

• physical digestion

Multiple Choice

What is the correct order of energy conversion in digestion?

• chemical, physical, heat

• thermal, heat, radiant

• chemical, thermal (heat), mechanical

• mechanical, chemical, thermal

Multiple Choice

What does chemical energy represent?

• Food

• Sound

• Light

• Radiant energy

Multiple Choice

What is mechanical energy?

• movement

• heat

• the nucleus

• food

Multiple Choice

How is energy converted during digestion in order for us to walk or run?

• Mechanical energy to chemical energy

• Electrical to sound energy

• Chemical energy to light

• Chemical energy to mechanical energy

Multiple Choice

As food is digested through the digestive system chemical energy (food) is broken down through chemical reactions such as enzymes and stomach acid. What type of energy would the chemical energy transform into?

• Chemical

• Physical

• Electrical

• Heat