Metabolism Chapter 3

The body system that takes in and breaks down molecules from food

• Circulatory

• Respiratory

• Digestive

• Integumentary

In order to exercise normally....

• water and carbon dioxide need to react & release energy

• glucose and oxygen need to react & release energy

• protein needs to get broken down into amino acids

• oxygen and amino acids need to react & release energy

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In order for our bodies to exercise, our cells need to get....

• molecules from food

• molecules from the air

• molecules from food and air

• molecules from drinking water

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Which of these molecules is needed by cells in order to make energy?

• amino acids

• protein

• starch

• glucose

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True or False: The body only works when cells get molecules from food and molecules from air.

• True

• False

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What is the chemical reaction that turns glucose and oxygen into ATP energy, water and carbon dioxide?

• cellular respiration

• photosynthesis

• breathing

• digestion

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Where does cellular respiration happen?

• nucleus

• mitochondria

• golgi body

• endoplasmic retticulum

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Which molecules are required to perform cellular respiration?

• amino acids and protein

• water and carbon dioxide

• ATP energy

• glucose and oxygen

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

• oxygen

• proteins

• molecules

• cells

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A student thinks that the human body only works properly when cells are getting molecules from food and molecules from air. Is the student correct?

• Yes, the body only works when cells get molecules from food and molecules from air.

• No, the body only works when cells are getting molecules from different types of food.

• No, the body only works when the lungs get molecules from air, and the stomach gets molecules from food.

• No, the body works as long as cells are making all the molecules they need.

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