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Both aerobic and anaerobic bacteria can cause infections in people, generally in environments that enable the bacteria to thrive. Which statement identifies the MOST likely infections? A. Aerobic bacteria cause an infection on the surface of the brain, and anaerobic bacteria cause an infection in bone marrow. B. Aerobic bacteria cause an infection in the stomach, and anaerobic bacteria cause an infection in the liver. C. Aerobic bacteria cause an infection on the surface of the skin, and anaerobic bacteria cause an infection in a heart muscle. D. Aerobic bacteria cause an infection in the kidney, and anaerobic bacteria cause an infection in the appendix.

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mother50
Aerobic bacteria cause an infection on the surface of the skin, and anaerobic bacteria cause an infection in a heart muscle.
An aerobic bacteria can survive and grow in a oxygenated environment. A perfect environment is the skin because it's in contact with a lot of oxygen.On the other hand, an anaerobic bacteria cannot grow in the presence of oxygen. So for them to cause an infection, they need to be in a place without this gas, just like the heart which a deep tissue.
 
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Answer:

C. Aerobic bacteria cause an infection on the surface of the skin, and anaerobic bacteria cause an infection in a heart muscle.

Explanation:

Aerobic bacteria need an oxygen-rich environment in order to thrive and cause infections. Such bacteria will not be able to survive in oxygen-deficient environment, let alone cause infection. On the other hand, anaerobic bacteria will thrive and be able to cause infection in oxygen-deficient environment and find it difficult to survive in oxygenated ones.

The surface of the skin is an oxygen-rich environment, a suitable habitat for bacteria to grow an be able to cause infections. The heart muscle environment is anaerobic and will only be suitable for anaerobic bacteria to thrive and be able to cause infections.

Hence, the correct option is C.

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