Crash Course Metabolism and Nutrition

the body's use of molecules for energy and growth

• system

• starch

• metabolism

• protein

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a group of atoms joined together in a particular way

• molecule

• system

• cell

• metabolism

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a molecule that organisms get from the air or water around them and use to release energy

• proteins

• glucose

• amino acids

• oxygen

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the body system that transports molecules to and from all cells of the body

• oxygen

• respiratory system

• digestive system

• circulatory system

the body system that takes in food and breaks it down

• stomach

• circulatory system

• digestive system

• respiratory system

The job of the respiratory system is to...

• take in oxygen and release carbon dioxide

• take in food and break it down

• transport molecules to and from all cells of the body

• make things move or change

Which molecule does not need to be broken down before entering the cell?

• proteins

• starch

• oxygen

What does starch get broken down into?

• proteins

• glucose

• amino acids

• oxygen

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What do proteins get broken down into?

• glucose

• starch

• oxygen

• amino acids

Tags

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An athlete thinks that she can exercise as long as she eats different types of food because her body just needs different types of food molecules to work properly. Is the athlete correct?

• A Yes, her cells only work when they have molecules from different types of food.

• B No, her muscles do not need molecules from food because all cells make all the molecules they need.

• C No, all cells need molecules from food and molecules from air to work properly.

• D No, only her stomach cells need food molecules to work properly.

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