The condition in which the blood does not clot properly due to deficiency of clotting factor VIII is: MCQ with Answer and Explanation

The condition in which the blood does not clot properly due to deficiency of clotting factor VIII is:
A. Leukemia
B. Anemia
C. Hemophilia A
D. Thalassemia
Answer: Option C
Solution (By JKSSB Mock Tests)
Hemophilia A is an X-linked recessive bleeding disorder caused by deficiency of factor VIII. Hemophilia B is factor IX deficiency. Anemia is low RBCs, thalassemia abnormal hemoglobin, leukemia cancer of WBCs.

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Practice More Biology Questions

Question #1
The organelle that processes and packages proteins for secretion is the:
A. Golgi apparatus
B. Lysosome
C. Ribosome
D. Rough endoplasmic reticulum

Correct Answer: Option A


Explanation:
The Golgi apparatus modifies, sorts, and packages proteins and lipids into vesicles for transport to their destinations (secretion, plasma membrane, lysosomes). Ribosomes synthesize proteins, rough ER folds and transports them, lysosomes digest materials.

This question belongs to: Science Biology
Question #2
The structure that connects the kidney to the urinary bladder is the:
A. Urethra
B. Renal pelvis
C. Ureter
D. Nephron

Correct Answer: Option C


Explanation:
The ureter is a muscular tube that carries urine from the renal pelvis of each kidney to the urinary bladder by peristalsis. The urethra carries urine from the bladder to the exterior. Renal pelvis collects urine from calyces, nephron is the functional unit.

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Question #3
Which of the following is a nitrogen-fixing bacterium in legume roots?
A. Nitrosomonas
B. Rhizobium
C. Azotobacter
D. Lactobacillus

Correct Answer: Option B


Explanation:
Rhizobium species form symbiotic root nodules in legumes and fix atmospheric nitrogen into ammonia. Azotobacter is free-living, Nitrosomonas nitrifies, Lactobacillus ferments.

This question belongs to: Science Biology