IC3 Unit Test Review

What conclusion can you draw about the energy released when food is burned outside the body compared to when it is metabolized with oxygen inside the body?

• The energy released from burning food outside the body is similar to the energy released when food reacts with oxygen inside the body.

• Burning food outside the body does not release any energy, while metabolizing food inside the body does.

• Only burning food outside the body releases energy, not when food reacts with oxygen inside the body.

• The energy released from burning food outside the body is completely different from the energy released inside the body.

Tags

NGSS.MS-LS1-7

NGSS.MS-PS3-5

Why do fats yield more energy per gram than carbohydrates?

• Fats yield more energy per gram than carbohydrates because they are lighter than carbohydrates.

• Fats yield more energy per gram than carbohydrates because their chemical structure contains more energy-rich bonds.

• Fats yield more energy per gram than carbohydrates because they dissolve easily in water.

• Fats yield more energy per gram than carbohydrates because carbohydrates have more atoms.

Tags

NGSS.HS-LS1-7

NGSS.HS-PS1-4

During our class experiment, why did the water temperature increase more when burning the oil sample compared to the marshmallow sample?

• Because the energy to heat the water came from the food, and since the oil sample caused a greater temperature increase, fats provide more energy than carbohydrates when burned.

• Because the energy to heat the water came from the food, and since the marshmallow sample caused a greater temperature increase, carbohydrates provide more energy than fats when burned.

Tags

NGSS.MS-PS3-5

You eat a bowl of rice. Using what you know about how starch is digested, describe what happens to the starch molecules in the rice as they are processed in your mouth.

• I chew the rice and swallow it. It goes to my stomach and is broken into smaller pieces.

• Rice contains the carbohydrate, starch. When I eat rice, it is chewed and mixed with saliva in my mouth. An enzyme in the saliva helps starch react with water to break down into smaller carbohydrate molecules.

• Rice contains the carbohydrate, glucose. When I eat rice, it is chewed and mixed with saliva in my mouth. An enzyme in the saliva helps glucose react with water to form starch.

• Rice contains the carbohydrate, starch. When I eat rice, it is chewed and mixed with saliva in my mouth. The saliva only makes it moist so I can swallow it.

Is food the only way your body gets the energy it needs to function? Why or why not?

• No. The body can also get energy from sunlight directly.

• No. The body can use vitamins as a direct energy source.

• Yes. Food provides the chemical energy that the body transforms into usable energy for all its activities.

• Yes. Food is the only source of energy because it contains light energy.

Charlotte notices that she is always able to run, play, and think, even when she is not eating. Explain why Charlotte's body is always using energy, but she does not need to be eating all the time.

• I eat when I need more food.

• I store food in my body when I eat. My body uses this stored food later on to give me the energy to do things when I am not eating.

Tags

NGSS.MS-LS1-7

How do children use the food they eat to increase their body size?

• Children use food molecules to build larger molecules that form new body tissues, helping them grow.

• Children use food molecules only for energy, and none of the molecules are used to build their bodies.

• Children store all food molecules as fat, which makes them taller.

• Children use food molecules to make new cells without changing the molecules at all.

Tags

NGSS.MS-LS1-7

When a small seed grows into a large plant, what is the main source of the plant's increased mass?

• It absorbs minerals from the soil.

• It takes in water through its roots.

• It uses sunlight to create food from carbon dioxide and water through photosynthesis.

• It gets nutrients from insects it traps.

Tags

NGSS.MS-LS1-6

Which of the following best represents the process of cellular respiration in living organisms?

• CO2 + H2O → glucose + O2

• glucose + O2 → CO2 + H2O

• CO2 + O2 → H2O + glucose

• glucose + H2O → CO2 + O2

Tags

NGSS.MS-LS2-3

How is the chemical reaction for food burning related to photosynthesis, the chemical reaction plants use to make food molecules?

• The burning of food releases energy from glucose, which is produced by photosynthesis in plants.
• The energy from food burning is stored in chlorophyll during photosynthesis.
• Photosynthesis produces energy by burning food.
• Food burning creates glucose, which is then used in photosynthesis.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7