Unit Study Guide: How Does Food Provide My Body with Energy?

Where does the light and thermal energy given off when food burns come from?

• Light and thermal energy given off from burning food comes from the lighter used to light the food

• Light and thermal energy given off from burning food is converted from the chemical energy stored in the food.

• Light and thermal energy given off from burning food comes from oxygen

• Light and thermal energy given off from burning is created when food burns.

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Does two grams of fat provide a different amount of energy than two grams of carbohydrate?

• Yes

• No

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What is the same about carbohydrates, proteins, and fats?

• Carbohydrates, proteins, and fats all have carbon, hydrogen, and oxygen atoms.

• Carbohydrates, proteins, and fats are all made of the same number and types of atoms.

• Carbohydrates, proteins, and fats all have the same arrangement and types of atoms.

• Carbohydrates, proteins, and fats can all form long chains of molecules.

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What is true about the breakdown of starch?

• Animals, but not plants, can break down starch.

• Organisms break down starch into carbon, hydrogen, and oxygen atoms.

• Organisms break down starch into carbohydrate subunits.

• Starch breakdown is not a chemical reaction.

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When do humans store fat molecules in their bodies?

• Humans store fat molecules every time they eat anything that contains calories.

• Humans store fat molecules when they eat food with a lot of fat.

• Humans store fat molecules when they eat junk food.

• Humans store fat molecules when they eat more calories than they need.

How do children use food molecules to grow taller?

• Children grow taller when they use food molecules they eat to build large molecules that make up

  new cells.

• Children grow taller when they use the food molecules they eat to make up new cells without

  changing the food molecules.

• Children grow taller when they use the energy from the food molecules, but all of the molecules

  leave the body as waste.

• Children grow taller when they store food molecules as fat.

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What is true about photosynthesis?

• During photosynthesis, plants convert thermal energy into chemical energy and store the energy in

  food molecules.

• During photosynthesis, plants use carbon dioxide and water in a chemical reaction to make glucose

  and oxygen.

• Photosynthesis is a chemical reaction used by plants and animals to make food molecules.

• Photosynthesis is the chemical reaction that plants use to get the energy to do things.

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What is true about why plants usually grow in soil?

• Plants use their roots to take in food from the soil.

• Plants use their roots to take in non-food nutrients and water from the soil.

• Plants use their roots to take in oxygen from the soil.

• Plants use their roots to take in carbon dioxide from the soil.

What do plants do with light energy during photosynthesis?

• The plants change the light energy into chemical energy.

• Science Stuff.

• The plants change thermal energy into chemical energy.

• The plants change light energy into thermal energy.

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A substance produced in a chemical reaction

• Isotope

• Glucose

• product

• food

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