M'Kenna Open Sci Ed

How does oxygen get into the blood?

• it enters through the villi in the small intestine

• it enters through the alveoli in the lungs

• it is created during cellular respiration

What are the products in this chemical equation?

• villi and alveoli

• water, carbon dioxide, and energy

• glucose and oxygen

• blood and cells

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When a person like Amaya burns glucose, where do the product molecules of CO2 and H20 go?

• out of the body through sweat

• out of the body through pooping

• out of the body through breathing

• turned into muscle

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The exhaled air from our body consists mostly of__________

• carbon dioxide

• nitrous oxide

• oxygen

• helium

When you breathe, your lungs take in ___ and remove ___.

• air/oxygen

• oxygen/carbon dioxide

• carbon dioxide/waste

• waste/air

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Our cells are constantly in need of energy. Through a chemical reaction, the cells turn _____ and _____ into a usable form of energy.

• oxygen ; carbon dioxide

• oxygen ; glucose

• carbon dioxide ; glucose

• carbon dioxide ; water

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Blood is part of which system?

• circulatory

• respiratory

• digestive

Which reactant molecule from the air is needed by all of your cells?

• oxygen

• carbon dioxide

• fat

• glucose

Your blood is like an Amazon delivery truck. Why?

• Blood brings food molecules and oxygen to cells and takes carbon dioxide and water away.

• Blood delivers carbon dioxide to the cells. and takes away food.

• Blood brings food molecules to the lungs and takes oxygen away from cells

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Why do the cells of your body need glucose?

• for energy

• to excrete

• to absorb carbon dioxide.

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