IC3 Unit Test Review

Front

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

Back

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

Front

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

Back

No. Food provides the chemical energy that the body transforms into usable energy for all its activities.

Front

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?

Back

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

Front

Why do fats yield more energy per gram than carbohydrates?

Back

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

Front

What is the main reason the sun is necessary for our survival?

Back

The sun allows plants to perform photosynthesis, which produces food and oxygen for living things.

Front

What is metabolism?

Back

Metabolism is the set of life-sustaining chemical reactions in organisms that convert food into energy.

Front

Define photosynthesis.

Back

Photosynthesis is the process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.

Front

What are macronutrients?

Back

Macronutrients are nutrients required in large amounts for energy and growth, including carbohydrates, proteins, and fats.

Front

Explain the role of carbohydrates in the body.

Back

Carbohydrates provide the primary source of energy for the body, especially for the brain and muscles during physical activity.

Front

What is the difference between saturated and unsaturated fats?

Back

Saturated fats are solid at room temperature and can raise cholesterol levels, while unsaturated fats are liquid and are considered healthier.