Question

Read the statements.
(a) Element important for production of thyroxine is iodine
(b) Vitamin $B_6$ is niacin or nicotinic acid
(c) Fructose is a hexose monosaccharide
(d) Globulin is a conjugate protein

• A. a, b, c are correct, d is wrong
• B. a, c are correct, b, d are wrong
• C. a, b are correct, c, d are wrong
• D. a is correct, b, c, d are wrong
• E. a, c, d are correct, b is wrong

Answer 1

The correct option is B a, c are correct, b, d are wrong

a) Thyroxine and triiodothyronine are the hormones secreted by the thyroid gland. The thyroid hormones are formed by the attachment of the iodine to the tyrosine residue. The statement is true.

b) Vitamin B${}_3$ is niacin. It forms nicotinamide adenine dinucleotide and act as a coenzyme which helps in carrying electrons during metabolic reactions. The statement is false.

c) Fructose is a monosaccharide with six carbon atom. C${}_5$H${}_{10}$O${}_{55}$ is the molecular formula of fructose. It is the sweetest sugar. It is mainly found in fruits, nuts and vegetables. The statement is true.

d) Globulin is the protein which is an integral part of the immune system. It is not a conjugate protein as it does not contain any other chemical group. The statement is false.

So, the correct answer is option B.