At the doctor’s office, the doctor drains the abscess and takes a sample for cul
ID: 140411 • Letter: A
Question
At the doctor’s office, the doctor drains the abscess and takes a sample for culturing. She also prescribes some broad-spectrum antibiotics to treat the obvious infection. A couple days later, the doctor tells Sam that his wound contained a number of bacteria including Pasteurella multocida. When the dog bit Sam’s arm P. multocida entered the wound and started to establish an infection. In order to do so, the bacteria have to grow, which requires energy. One of the most common energy sources used by bacteria is glucose. Why is glucose such a good source of energy for bacteria?
At the doctor’s office, the doctor drains the abscess and takes a sample for culturing. She also prescribes some broad-spectrum antibiotics to treat the obvious infection. A couple days later, the doctor tells Sam that his wound contained a number of bacteria including Pasteurella multocida. When the dog bit Sam’s arm P. multocida entered the wound and started to establish an infection. In order to do so, the bacteria have to grow, which requires energy. One of the most common energy sources used by bacteria is glucose. Why is glucose such a good source of energy for bacteria?
Glucose contains six oxygen atoms, which can be used for oxidative phosphorylation and the generation of many ATP molecules. Glucose is a highly reduced compound, containing many carbon-hydrogen bonds and a lot of potential energy. Glucose contains six carbon atoms, which can be quickly incorporated into organic cellular constituents needed for growth. Glucose is a highly oxidized compound, containing many carbon-hydrogen bonds and a lot of potential energy.Explanation / Answer
The correct answer is, Glucose is a highly reduced compound, containing many carbon-hydrogen bonds and a lot of potential energy.
Explanation: Glucose is a monosaccharide. Its molecular formula is C6H12O6 . It is a highly reduced compound and the reduced carbon atom has more energy than the oxidized carbon. When a highly reduced compound reacts with an electron acceptor, the energy is released. Glucose contains many carbon-hydrogen bonds and it is a good source of energy because of it reactive hydrogens also.
Under aerobic conditions, the glucose breaks down and CO2 , H2O, and energy are produced. The glucose can also be utilized anaerobically. Therefore, glucose is a good source of energy for bacteria.
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