Biology Botany Model Papers NEET UG Medical/Dental,Jipmer,Aiims

NEET UG Botany MCQ-102

Question No:1

In majority of the proteins linear polypeptide chain gets coiled in __ manner form secondary structure

(A) Clockwise
(B) Anti clockwise
(C) Randomly
(D) None of the above

Question No:2

Human hemoglobin is made up of

(A) Two polypeptide chains of four types
(B) Two polypeptide chains of two types
(C) Four polypeptide chains of four types
(D) Four polypeptide chains of two types

Question No:3

Which of the following type of reaction occurs during the formation of peptide bond and glycosidic bond?

(A) dehydrogenation
(B) decarboxylation
(C) dehydration
(D) Oxidation

Question No:4

“Glycosidic bond” is seen in

(A) Oligosaccharides
(B) Polysaccharides
(C) Monosaccharides
(D) a & b

Question No:5

Phosophodiester bond is formed between

(A) 3 1 carbon and 5 1 carbon of sugar in a nucleotide
(B) 5 1 carbon and 3 1 carbon of sugar in a nucleotide
(C) 3 1 carbon of sugar of one nucleotide and 5 1 -c of sugar of another nucleotide
(D) All the above

Question No:6

The type of bond formed between nitrogen base and sugar molecule in a nucleoside is

(A) Peptide bond
(B) Ester bond
(C) Glycosidic bond
(D) All the above

Question No:7

The type of bond formed between hydroxyl group of sugar and phosphate is

(A) Ester bond
(B) Glycosidic
(C) Peptide bond
(D) All the above

Question No:8

Double helical model of DNA was proposed by

(A) Singer and Nicholson
(B) Watson and Crick
(C) Sutton and Boveri
(D) Jacob and Monad

Question No:9

Nitrogen bases in a DNA double helix are bonded by

(A) Phosphodiester bonds
(B) Ester bond
(C) Hydrogen bonds
(D) Glycosidic bond

Question No:10

The angle between two consecutive base pairs of a DNA molecule is

(A) 36 0
(B) 360 0
(C) 20 0
(D) 1800

Question No:11

The pitch of DNA molecule is

(A) 34 0 A
(B) 3.4 0 A
(C) 20 0 A
(D) 18 0 A

Question No:12

The distance between two successive base pairs is

(A) 3.4 0 A
(B) 2.8 0 A
(C) 2.0A 0
(D) 4.0A0

Question No:13

Number of nucleotides per one turn of DNA double helix is

(A) 20
(B) 40
(C) 10
(D) 60

Question No:14

Most common type of DNA is

(A) B DNA
(B) A DNA
(C) Z DNA
(D) a &b

Question No:15

A series of reactions which occur to form a compound or degrade a compound put together are called

(A) Metabolism
(B) Anabolism
(C) Catabolism
(D) All the above

Question No:16

Proteins with specific power of activation are called

(A) Abzymes
(B) Ribozymes
(C) Enzymes
(D) All the above

Question No:17

Pathway’s which consume energy and synthesise complex compounds are called

(A) Anabolic pathways
(B) Catabolic pathways
(C) Amphibolic pathways
(D) All the above

Question No:18

Pathways in which complex compounds are converted to simple compounds by the release of energy are

(A) Anabolic pathways
(B) Catabolic pathways
(C) Amphibolic pathways
(D) All the above

Question No:19

Energy currency of the cell is

(A) GDP
(B) AMP
(C) ATP
(D) GMP

Question No:20

RNA molecules having catalytic activity are called

(A) Ribozymes
(B) Abzymes
(C) Ferments
(D) All the above