Question

1. doctors tested a patient to find out what molecules were in her cells. her cells contained normal levels of oxygen molecules, low levels of amino acid molecules, and low levels of glucose molecules. will this patient be able to exercise normally? yes, as long as her cells have enough oxygen, her body will be able to exercise. no, her cells need glucose to react with oxygen to release enough energy to exercise. no, her cells need amino acids to react with oxygen to release enough energy to exercise. no, her cells need glucose to react with amino acids to release enough energy to exercise.

Explanation:

To determine if the patient can exercise normally, we analyze cellular energy production. Cells use cellular respiration, where glucose reacts with oxygen (in aerobic respiration) to release energy (ATP) needed for exercise. Amino acids are for protein synthesis, not primary energy for exercise. The patient has low glucose:

• First option is wrong: Oxygen alone isn’t enough; glucose is needed for energy.
• Second option is correct: Glucose + oxygen → energy (ATP) for exercise.
• Third option is wrong: Amino acids don’t react with oxygen for energy (they’re for proteins).
• Fourth option is wrong: Glucose and amino acids don’t react for energy (glucose reacts with oxygen).

Answer:

B. No, her cells need glucose to react with oxygen to release enough energy to exercise.