Which of the following best describes the function of the human nervous system? A. The nervous system transports oxygen and nutr
ients to the body's tissues. B. The nervous system collects and responds to information about the internal and external environment. C. The nervous system protects the body against infection and helps regulate body temperature. D. The nervous system protects internal organs and assists with movement.
Sickle cell disease is caused by a mutation in the hemoglobin-Beta gene found on chromosome 11. Hemoglobin transports oxygen from the lungs to other parts of the body. Red blood cells with normal hemoglobin (hemoglobin-A) are smooth and round and glide through blood vessels.Explanation: