3.2 What Happens to Your Food Chemical Reactions

What happens to the atoms in your food when you eat?

• They are destroyed and new atoms are created.

• They are rearranged through chemical reactions and become part of your body.

• They leave your body immediately as waste.

• They remain unchanged and are stored in the body.

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Why does your body need food?

• To provide energy for growth and to add more cells.

• To create new atoms for chemical reactions.

• To store food as it is without breaking it down.

• To keep the food in its original delicious form.

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According to the law of conservation of mass, what can be said about atoms in chemical reactions?

• Atoms are created during digestion.

• Atoms can be created or destroyed as needed.

• Atoms are moved around and combined into different types of molecules and structures.

• Atoms are permanently lost during chemical reactions.

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What happens to the molecules from the food you eat during digestion?

• They are expelled from the body unchanged.

• They are turned into a single type of molecule.

• They are rearranged into simpler molecules and extended structures.

• They are frozen in their current state for future use.

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What is cellular respiration?

• A process where energy is stored without being released.

• A process similar to freezing that preserves food molecules.

• A chemical reaction that releases energy, similar to burning.

• A reaction that only occurs in plants, not in humans.

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What allows us to grow from babies into children, then teenagers, and then adults?

• Physical exercise

• Chemical reactions in the body

• Sunlight

• Water

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What are amino acids?

• A type of carbohydrate

• Molecules that make up larger molecules called proteins

• A form of fat molecule

• A source of water for the body

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What is the role of fat molecules in food according to the text?

• They are used to build muscle tissue

• They are broken down into amino acids

• They protect organs and keep you warm

• They are converted into oxygen and water

Why would food not be very helpful to your body without chemical reactions?

• You wouldn't be able to taste it

• You wouldn't be able to digest it

• You wouldn't be able to get energy from it

• You wouldn't be able to cook it

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What happens to starch molecules in food according to the text?

• They are broken down and used to release energy

• They are broken down into amino acids

• They protect organs and keep you warm

• They are converted into oxygen and water

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