Which statement about red blood cells is true?

Which statement about red blood cells is true?

• A. They Have A Nucleus.
• B. They Carry Carbon Dioxide Only.
• C. They Transport Oxygen.
• D. They Are Produced In The Liver.

Answer: (C)

Gas transport is the key role of red blood cells. They carry oxygen from the lungs to tissues via hemoglobin, which binds O2 in the lungs where oxygen is plentiful and releases it in tissues where it’s needed. They also help remove carbon dioxide from tissues back to the lungs, though they don’t do this to the exclusion of oxygen transport. In mammals, mature red blood cells lack a nucleus, maximizing space for hemoglobin, and they’re produced in bone marrow, not the liver.

Gas transport is the key role of red blood cells. They carry oxygen from the lungs to tissues via hemoglobin, which binds O2 in the lungs where oxygen is plentiful and releases it in tissues where it’s needed. They also help remove carbon dioxide from tissues back to the lungs, though they don’t do this to the exclusion of oxygen transport. In mammals, mature red blood cells lack a nucleus, maximizing space for hemoglobin, and they’re produced in bone marrow, not the liver.