Biology - Study Mode

[#811] Among the given nutrients, milk is a poor source of
Correct Answer

(D) Vitamin C

Explanation

Solution: Among the given nutrients, milk is a poor source of Vitamin C.

[#812] Which nutrient forms most of our body weight?
Correct Answer

(A) Water

Explanation

Solution: Water is a nutrient that makes up 60% of our body weight.

[#813] Which Vitamin is obtained from Sun rays?
Correct Answer

(D) Vitamin D

Explanation

Solution: Vitamin D is the sunshine vitamin that has been produced on this earth for more than 500 million years. During exposure to sunlight 7-dehydrocholesterol in the skin absorbs UV B radiation and is converted to previtamin D3 which in turn isomerizes into vitamin D3.

[#814] The Vitamin required for the synthesis of nucleic acid is
Correct Answer

(B) Folic acid

Explanation

Solution: According to Stokes, folic acid may function in an enzyme system responsible for the synthesis of thymine, which in turn is used for forming nucleic acids.

[#815] Which of the following statements is not true about metabolism?
Correct Answer

(A) Younger people generally have a slower metabolism than adults

Explanation

Solution: Metabolism is the set of life-sustaining chemical transformations within the cells of organisms. The three main purposes of metabolism are the conversion of food/fuel to energy to run cellular processes, the conversion of food/fuel to building blocks for proteins, lipids, nucleic acids, and some carbohydrates, and the elimination of nitrogenous wastes. Younger people have faster metabolism than adults. Hence, the given statement 'Younger people generally have a slower metabolism than adults' is false.