IC3 How Does Food Provide Energy to Do Things?

Are vitamins and minerals considered food?

• No, they do not give the body any building materials or energy.

• Yes, it gives the body both building materials and energy

• It give building materials only

• It give energy.

When burning as a model, the thermal and light energy comes from?

• The lighter creates all the energy.

• It comes from the oxygen present

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

• the chemical energy stored in the food

Does two grams of fat provide the same amount of energy as two grams of carbohydrates?

• 9 calories per 1 gram

• 18 calories fat compared to 4 calories of carbohydrates

• 18 calories of fat compared to 8 calories of carbohydrates

• 9 calories for fat compared to 2 calories of carbohydrates

What elements do fats, proteins, and carbohydrates have in common?

• oxygen, nitrogen, and phosphorous

• carbon, hydrogen, and oxygen

• Carbon dioxide, oxygen

• carbon, sulfur, and nitrogen

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.

• Starch breakdown is not a chemical reaction

• Organisms breakdown starch into carbohydrate subunits.

When do humans store fat molecule in their body?

• Humans store fat molecules every time they eat anythng 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 to grow taller?

• they use food molecules they eat to build large molecules that make up new cells.

• they use food molecules they eat to make up new cells without changing the food molecules.

• they use energy from food molecules, but all of the molecules leave the body as waste.

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

What is true about photosynthesis?

• plants convert thermal energy into chemical energy and store the energy in food molecules

• plants use carbon dioxide and water in a chemical reaction to make glucose and oxygen.

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

• us a chemical reaction that plants use to get the energy to do things.

What is the original source of energy for all livings things on Earth?

• soil

• the sun

• water

• oxygen

Why is your body always using energy but you do not need to eat all the time?

• Your body uses stored food.

• You have to eat all the time

• You use photosynthesis.

• You have to eat all the time.