PRACTICE RBC 2 TEST (EXAMPLES) EXAM WITH CORRECT ACTUAL QUESTIONS AND CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY GRADED A+

PRACTICE RBC 2 TEST (EXAMPLES) EXAM
WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+



1. What is the primary function of red blood cells (RBCs)?


A. Fight infection
✔ B. Transport oxygen
C. Produce hormones
D. Clot blood


Answer: ✔ B. Transport oxygen
Explanation: RBCs contain hemoglobin, which binds oxygen
in the lungs and delivers it to body tissues.


2. What protein carries oxygen in RBCs?


A. Myosin

,✔ B. Hemoglobin
C. Fibrin
D. Albumin


Answer: ✔ B. Hemoglobin
Explanation: Hemoglobin is the iron-containing protein
responsible for oxygen transport.


3. Where are RBCs produced?


A. Liver
✔ B. Bone marrow
C. Spleen
D. Kidney


Answer: ✔ B. Bone marrow
Explanation: RBCs are produced in the red bone marrow
through erythropoiesis.


4. What hormone stimulates RBC production?

,A. Insulin
✔ B. Erythropoietin
C. Thyroxine
D. Cortisol


Answer: ✔ B. Erythropoietin
Explanation: Produced by the kidneys in response to low
oxygen levels.


5. Normal RBC lifespan is approximately:


A. 30 days
B. 60 days
✔ C. 120 days
D. 200 days


Answer: ✔ C. 120 days
Explanation: RBCs circulate for about 120 days before being
removed by the spleen.


6. What is the shape of a normal RBC?

, A. Spherical
✔ B. Biconcave disc
C. Cuboidal
D. Spindle-shaped


Answer: ✔ B. Biconcave disc
Explanation: This shape increases surface area for oxygen
exchange.


7. Which organ destroys old RBCs?


A. Heart
✔ B. Spleen
C. Lung
D. Pancreas


Answer: ✔ B. Spleen
Explanation: The spleen filters and removes aged or
damaged RBCs.