Consider statements about vitamins: 1. Vitamin A is fat-soluble. 2. Vitamin C is water-soluble. 3. Vitamin D deficiency causes scurvy. Which are correct? MCQ with Answer and Explanation
Consider statements about vitamins: 1. Vitamin A is fat-soluble. 2. Vitamin C is water-soluble. 3. Vitamin D deficiency causes scurvy. Which are correct?
A. 2 and 3 only
B. 1 and 3 only
C. 1, 2 and 3
D. 1 and 2 only
Answer: Option D
Solution (By JKExamLibrary)
Vitamins A, D, E, and K are fat-soluble vitamins, meaning they are absorbed along with fats in the diet and can be stored in the body's fatty tissue and liver. Vitamin C and the B-complex vitamins are water-soluble, meaning they dissolve in water and are not stored in significant amounts. Vitamin D deficiency causes rickets in children and osteomalacia in adults; scurvy is caused by Vitamin C deficiency. Thus, statements 1 and 2 are correct.
Explanation:
Edward Jenner developed the first successful vaccine using cowpox to protect against smallpox in 1796. Pasteur developed rabies vaccine, Salk polio, Koch identified TB bacterium.
Explanation:
Typhoid fever is caused by Salmonella typhi, transmitted through contaminated food and water. Widal test is used for diagnosis. Cholera is Vibrio cholerae.
Explanation:
AB positive blood has both A and B antigens and the Rh antigen, so it lacks antibodies against A, B, or Rh. Hence, individuals with AB+ can receive red blood cells from any donor without agglutination. O negative is the universal donor. Compatibility depends on antigens on donor RBCs and antibodies in recipient plasma.
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