OpenSciEd 7.3 L13

The digestive system takes in food and breaks it down through chemical reactions, and the small food molecules get ___________ into the body’s circulatory system through the small intestine.

The respiratory and circulatory systems work together to bring food molecules and _________ to cells in the body and to produce carbon dioxide.

Some organs in the ______________ system that work together include the following: nose, mouth, and lungs.

• circulatory

• respiratory

• digestive

Some organs in the circulatory system that work together include the following: blood and heart.

• True

• False

Humans need to take in food. Food is a type of fuel, which means that it can react with other substances to release _________.

Tags

NGSS.MS-LS1-7

Food and oxygen are rearranged through a chemical reaction inside ______, which creates carbon dioxide and water and releases energy.

Tags

NGSS.MS-LS1-6

The body system’s inputs are ______ and oxygen.

Tags

NGSS.MS-LS1-3

Oxygen + Food ---> Carbon Dioxide + Water

What would you call the oxygen and food in this chemical equation?

• Reactants

• Products

• Energy

• Chemical Reaction

Tags

NGSS.MS-PS1-2

Oxygen + Food ---> Carbon Dioxide + Water

What would you call the carbon dioxide and water in this chemical equation?

• Reactants

• Products

• Energy

• Chemical Reaction

Oxygen + Food ---> Carbon Dioxide + Water

That arrow is what represents the chemical reaction. What is released there?

• Fat

• blood

• Energy

• muscles

Tags

NGSS.MS-LS1-7