Multiple Choice
What is the primary function of hemoglobin in erythrocytes?
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17. The Blood
Erythrocytes: Hemoglobin
Multiple Choice
Which component of blood is primarily responsible for carrying oxygen to body tissues?
A
Hemoglobin within erythrocytes (red blood cells)
B
Plasma proteins (albumin, globulins, and fibrinogen)
C
Leukocytes (white blood cells)
D
Platelets (thrombocytes)
Verified step by step guidance1
Step 1: Understand the components of blood and their primary functions. Blood consists mainly of plasma, erythrocytes (red blood cells), leukocytes (white blood cells), and platelets (thrombocytes).
Step 2: Identify the role of erythrocytes. These cells contain hemoglobin, a protein specialized in binding and transporting oxygen from the lungs to body tissues.
Step 3: Recognize that hemoglobin is the molecule within erythrocytes responsible for oxygen transport. It binds oxygen molecules in the lungs and releases them in tissues where oxygen is needed.
Step 4: Differentiate other components: plasma proteins mainly maintain osmotic pressure and immune functions, leukocytes are involved in immune defense, and platelets are essential for blood clotting.
Step 5: Conclude that the primary component responsible for carrying oxygen to body tissues is hemoglobin within erythrocytes (red blood cells).
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