Metabolism Practice Quiz

Marisol has been chewing and swallowing her food, but her digestive system is not doing what it usually does. Why is this a problem for her ability to exercise?

• Her cells will not work well because molecules from her food are not being broken down small enough to get to her cells.

• Her body will run out of energy because molecules from the air are not being combined into larger molecules for the cells.

• Her respiratory system will have to work twice as hard to break down molecules from food.

• Her cells will not work well because the molecules from food will be too small for cells to use.

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.

An ocean scientist plans to spend several days underwater in a submarine. Doctors on land will monitor her body to make sure she is healthy during her trip. What is one way doctors will be able to tell whether her body is healthy enough to do all her tasks while she is in the submarine?

• The doctors could see if her cells are getting several different types of food molecules.

• The doctors could see if she is getting plenty of sleep so her body can make enough energy.

• The doctors could see if her lung cells have molecules from air, and her stomach cells have molecules from food.

• The doctors could see if her cells are getting the molecules they need from food and air.

A patient has been eating healthy foods, but his digestive system is not doing what it usually does. Can this patient still exercise normally?

• Yes, as long as he can still breathe, his cells will have all the molecules they need to release energy.

• No, his digestive system is not breaking down oxygen into molecules small enough to get inside his cells.

• No, molecules from food are not combining together to be large enough for his cells to use.

• No, molecules from food are not getting broken down small enough to get inside his cells.

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.