Practice check: Which option correctly completes the fact: which vitamin is essential for normal blood clotting?

✅ D. Downs syndrome

Option A: Hay fever Option B: Scurvy Option C: Parkinson Disease Option D: Downs syndrome Correct Answer : Downs syndrome Read more

✅ C. viroids

Option A: virion Option B: mycoplasma Option C: viroids Option D: prions Correct Answer : viroids Read more

✅ B. Urea

Option A: Ammonia Option B: Urea Option C: Uric acid Option D: Trimethylamine oxide Correct Answer : Urea Read more

✅ D. Cerebellum

a: Pituitary gland | b: Medulla only | c: Hypothalamus | d: Cerebellum Read more

✅ D. Vitamin K

✅ B. Xylem

a: Epidermis | b: Xylem | c: Phloem | d: Cortex only Read more

✅ A. Pancreas

a: Pancreas | b: Gallbladder | c: Spleen | d: Thyroid Read more

✅ D. Iris

a: Optic nerve | b: Cornea only | c: Retina | d: Iris Read more