8.L.5.1 /5.2 and 8.L.2.1 Review

Which is the primary source of energy for most cells in the body?

• sugar

• fat

• protein

• vitamin

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8.L.5.1

Where do plants get the food they need for energy?

• They absorb it directly from the sun.

• They absorb it directly from the soil.

• They produce it during photosynthesis.

• They receive it from atmospheric gases.

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8.L.5.1

Why is protein an important part of a healthy diet?

• It is needed to change glucose to energy.

• It is needed to store nutrients.

• It is needed to repair tissue.

• It is needed to produce water.

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8.L.5.1

Why is a healthy diet important?

• It maintains a constant body temperature.

• It prevents damage to internal organs.

• It makes oxygen for all the cells in the body.

• It supplies the body’s needs for growth and energy.

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8.L.5.2

Which food provides the most energy for the body in the shortest amount of time?

• potato

• meat

• milk

• fruit

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8.L.5.2

A runner is preparing to run a long race. Which would provide the highest level of

energy for the runner?

• minerals

• carbohydrates

• proteins

• vitamins

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8.L.5.2

Why are digestion and respiration important to the body?

• They control the production of hormones in the body.

• They build muscle and bone that the body needs.

• They store food for the body.

• They help provide the energy needed for body functions.

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8.L.5.2

One of the oldest uses of biotechnology in healthcare is the production of the

important compound insulin. Scientists usually make insulin using bacteria instead of collecting it from animals.

Which reason justifies why some scientists choose to collect insulin from animals

instead of using bacteria?

• The bacteria can make insulin at a faster rate.

• Every batch of the insulin made from the bacteria is controlled.

• People can have bad reactions to the insulin from the bacteria.

• The area needed to keep the bacteria is small.

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8.L.2.1

Which of these careers would a student studying biotechnology most likely

pursue?

• electrical engineering

• astronomy

• agricultural research

• geology

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8.L.2.1

Which is a way the agricultural biotechnology industry could have a positive

impact on the environment?

• by producing crops that are virus resistant

• by making robots to replace large farm machines

• by reducing the need for countries to import food

• by increasing the use of wind farms that produce electricity

Answer explanation

When countries can make their own food in significantly large amounts, they will spend less money to import food, which will reduce the cost of food prices as well as make more money available to invest or develop the economy.

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