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Multiple Choice
Which of the following statements about blood is true?
A
White blood cells are the main component of blood plasma.
B
Blood is composed entirely of plasma.
C
Platelets are responsible for carrying nutrients throughout the body.
D
Red blood cells are responsible for transporting oxygen.
Verified step by step guidance
1
Begin by understanding the components of blood. Blood is composed of plasma, red blood cells, white blood cells, and platelets.
Plasma is the liquid portion of blood and contains water, salts, enzymes, antibodies, and other proteins. It is not composed entirely of white blood cells.
White blood cells are part of the immune system and help fight infections, but they are not the main component of plasma.
Platelets are small cell fragments that play a crucial role in blood clotting, not in carrying nutrients.
Red blood cells contain hemoglobin, a protein that binds oxygen. They are primarily responsible for transporting oxygen from the lungs to the rest of the body.