Non-protein part of enzyme is known as from Biology Biomolecules

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 Multiple Choice QuestionsMultiple Choice Questions

61.

Enzymes, vitamins and hormones can be classified into a single category of biological chemicals, because all of these

  • enhance oxidative metabolism

  • are conjugated proteins

  • are exclusively synthesized in the body of a living organism as at present

  • help in regulating metabolism


62.

In DNA, which is absent

  • Adenine

  • Thymine

  • Guanine

  • Uracil


63.

Which is called soluble RNA

  • r-RNA

  • t-RNA

  • m-RNA

  • hn-RNA


64.

Micro-nutrients are

  • less important in nutrition than macronutrients

  • as important in nutrition as macro-nutrients

  • may be omitted from culture media without any detrimental effect on the plant

  • called micro because they play only minor role in nutrition


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65.

Carrier of fluorosis is

  • CO2

  • chlorine

  • nitrogen

  • water


66.

Non-genetic RNA is of

  • two types

  • three types

  • only one type

  • none of these


67.

A nucleotide is a molecule consisting of a

  •  hexose sugar, phosphorus and albumen

  • phosphorus, iron and calcium

  • phosphate, 5-carbon sugar and nitrogen base

  • RNA and glucose


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68.

Non-protein part of enzyme is known as

  • holoenzyme

  • apoenzyme

  • prothetic group

  • none of these


C.

prothetic group

The enzyme complex (holoenzyme) is made up of two parts i.e., protein part (apoenzyme) and non-protein part (cofactor). Cofactor is of three types-

(i) prosthetic group
(ii) coenzymes
(iii) metal ions

Holoenzymes = Apoenzyme + Prosthetic group (Enzyme complex) (Protein part) (Non-protein part).


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69.

Carbohydrates, the most abundant biomolecules on earth, are produced by:

  • all bacteria, fungi and algae

  • fungi, algae and green plant cells

  • some bacteria, algae and green plant cells

  • viruses, fungi and bacteria


70.

Which one is antioxidant vitamin?

  • Vitamin- D

  • Vitamin- E

  • Vitamin- B

  • Vitamin- K


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