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Biomolecules

Multiple Choice Questions

211.

In DNA, which is absent

Adenine
Thymine
Guanine
Uracil

212.

Which is called soluble RNA

r-RNA
t-RNA
m-RNA
hn-RNA

213.

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

214.

Carrier of fluorosis is

CO₂
chlorine
nitrogen
water

215.

Non-genetic RNA is of

two types
three types
only one type
none of these

216.

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

217.

Non-protein part of enzyme is known as

holoenzyme
apoenzyme
prothetic group
none of these

218.

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

219.
Which one is antioxidant vitamin?

Vitamin- D

Vitamin- E

Vitamin- B

Vitamin- K

Vitamin- E

Antioxidant vitamins are Vitamin C, Vitamin E and $β$ - carotene. They are so called as they inactive oxygen free radicals. Free radicals are highly reactive particles that carry an unpaired electron [e^-], they damage cell membranes, DNA, other cellular structures and contribute to formation of artery narrowings and atherosclerosis.