Question

1. 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?

responses

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.

1. asthma is a condition in which it can be very hard for a person to breathe in enough air. would it also be difficult for someone with asthma to exercise?

responses

no, as long as the person is getting enough sleep, he will make enough energy to exercise.

no, as long as the person’s cells are getting different types of molecules from food, he can still exercise.

no, the person’s cells may not have everything they need, but his body can still exercise normally.

yes, it will be difficult for a person with asthma to exercise because his cells need molecules from air.

Explanation:

Question 12

To determine if the patient can exercise normally, we analyze the cell molecules: normal glucose and amino acids, low oxygen. Energy release for exercise requires cellular respiration, where glucose reacts with oxygen. Low oxygen suggests respiratory system issues (not getting enough O₂). Let's evaluate options:

• First option: Incorrect, as low oxygen impacts energy production.
• Second option: Incorrect, digestive system isn't the issue (glucose is normal).
• Third option: Incorrect, proteins don't react with glucose for energy; cellular respiration uses glucose and O₂.
• Fourth option: Correct, respiratory system isn't providing enough O₂, and cells need O₂ + glucose for energy.

Asthma makes breathing hard, so less air (and O₂) intake. Exercise needs energy from cellular respiration (glucose + O₂). Let's evaluate:

• First option: Incorrect, sleep doesn't bypass O₂ need for energy.
• Second option: Incorrect, food molecules alone aren't enough; O₂ from air is needed.
• Third option: Incorrect, cells needing O₂ (from air) will struggle, so exercise isn't normal.
• Fourth option: Correct, asthma limits air intake, so cells lack O₂ needed for energy during exercise.

Answer:

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

Question 13