Metabolism Review 2

Select all that apply - The basic molecules that a cell needs to continue functioning well are:

• glucose

• amino acids

• carbon dioxide

• oxygen

Select all that apply - The basic molecules that a cell needs to continue functioning well are:

• glucose

• amino acids

• carbon dioxide

• oxygen

An athlete thinks she can exercise as long as she eats different types of food because her body just needs different types of food molecules to work properly. Is the athlete correct?

• Yes, her cells only work when they have molecules from different types of food.

• No, her muscles do not need molecules from food because all cells make all the molecules they need.

• No, all cells need molecules from food and molecules from air to work properly. 

• No, only her stomach cells need food molecules to work properly.

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Doctors tested a patient to find out what molecules were in her cells. Her cells contained normal levels of amino acids, normal levels of oxygen molecules, and low levels of glucose molecules. Will this patient be able to exercise normally?

• Yes, her cells just need to combine amino acids to release energy.

• No, her cells need to combine glucose into starch molecules to release energy.

• No, her cells need glucose to react with oxygen to release energy.

• Yes, her cells just need oxygen to release energy.

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The job of the digestive system is to:

• Break food down into small enough molecules so that cells can use them.

• Provide oxygen molecules that can be used by cells.

• Transport resources (oxygen, glucose, amino acids) throughout the body to the cells.

• Identify different problems in the body that might stop cells from receiving the necessary resources.

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The job of the respiratory system is to:

• Break food down into small enough molecules so that cells can use them.

• Provide oxygen molecules that can be used by cells.

• Transport resources (oxygen, glucose, amino acids) throughout the body to the cells.

• Identify different problems in the body that might stop cells from receiving the necessary resources.

The job of the circulatory system is to:

• Break food down into small enough molecules so that cells can use them.

• Provide oxygen molecules that can be used by cells.

• Transport resources (oxygen, glucose, amino acids) throughout the body to the cells.

• Identify different problems in the body that might stop cells from receiving the necessary resources.

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If a person is breathing normally, which of the following could prevent him from using his body to exercise normally?

• not getting enough sunlight, because cells need sunlight to function

• not getting enough sleep, because the body only makes energy for exercise while asleep

• not eating enough food, because cells need molecules from both food and air to work

• nothing, because he would be able to exercise normally as long as his cells are getting molecules from the air

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Raoul ate a meal of oats before seeing his doctor. Oats are made of mostly starch molecules. Raoul feels tired, so his doctor gave him a test and found that Raoul’s cells contained glucose molecules, but they did not contain enough oxygen molecules. Does this explain why Raoul feels tired?

• No, something else must be wrong because his cells have all the molecules they need.

• Yes, his digestive system is breaking down starch molecules, but his respiratory system may not be working properly.

• Yes, his respiratory system is working, but his digestive system is not getting energy from combining glucose molecules.

• Yes, his digestive system is working, but his respiratory system is not breaking down oxygen, so his body stopped making energy.

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Doctors tested a patient to find out what molecules were in his cells. His cells contained normal levels of glucose molecules and amino acid molecules, and low levels of oxygen molecules. Will this patient be able to exercise normally?

• Yes, his body is working properly enough to exercise.

• No, his digestive system is not breaking down food molecules; his cells need starch molecules to react with glucose, which releases energy.

• No, his body systems are working, but he needs to eat different food; only proteins can react with glucose to release energy.

• No, his respiratory system is not working; his cells need oxygen to react with glucose, which releases energy.

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