Multiple Choice
Which component of blood is primarily responsible for carrying oxygen to body tissues?
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17. The Blood
Erythrocytes: Hemoglobin
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In the context of erythrocytes and hemoglobin, which blood component is primarily responsible for the red color of blood?
A
Albumin in plasma
B
Leukocyte cytoplasmic enzymes
C
Hemoglobin within erythrocytes
D
Platelet-derived clotting factors
Verified step by step guidance1
Understand that the red color of blood is due to a specific molecule that can bind oxygen and is found inside red blood cells (erythrocytes).
Recall that hemoglobin is the protein within erythrocytes responsible for oxygen transport and contains iron, which gives blood its red color when oxygenated.
Recognize that albumin is a plasma protein mainly involved in maintaining osmotic pressure and does not contribute to blood color.
Know that leukocytes (white blood cells) contain enzymes but are not abundant enough to affect blood color significantly.
Understand that platelets are involved in clotting and do not contain pigments that influence the color of blood.
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