NEET UG Botany MCQ-110

Question No:1

Nucleotides are formed by

(A) Purine, sugar and phosphate
(B) Purine, pyrimidine and phosphate
(C) Purine, pyrimidine sugar and phosphate
(D) Pyrimidine, sugar and phosphate

Question No:2

Width of the DNA molecules is

(A) 15 A 0
(B) 20 A 0
(C) 25 A 0
(D) 34 A 0

Question No:3

Suppose evolution on earth has occurred such a way that there are 96 amino acids instead of DNA has 12 different types of bases and DNA synthesis occur in this same way as today. The minimum number of bases per DNA codon would be?

(A) 12
(B) 8
(C) 2
(D) 3

Question No:4

The RNA that pick up specific amino acid from amino acid pool in the cytoplasm to ribosome during protein synthesis is called

(A) m- RNA
(B) t – RNA
(C) r- RNA

Question No:5

Lactose is composed of

(A) Glucose + Fructose
(B) Glucose + glucose
(C) Glucose + galactose
(D) Fructose + galactose

Question No:6

During transcription, the DNA site at which RNA polymerase binds is called

(A) Promotor
(B) Regulator
(C) Receptor
(D) Enhancer

Question No:7

Insulin is a

(A) Lipid
(B) Protein
(C) Human insulin
(D) Polysaccharide

Question No:8

Which of the following is not a pentose sugar

(A) Arabinose
(B) Xylose
(C) Xylulose
(D) Mannose

Question No:9

Genetic information is carried by long chain macro molecules made up of

(A) Amino acid
(B) Nucleotides
(C) Chromosomes
(D) Enzymes

Question No:10

Which one are correctly matched?

(A) Vitamin E – tocopherol
(B) Vitamin D – riboflavin
(C) Vitamin B – calciferol
(D) Vitamin A – thiamine

Question No:11

Genetic materials in ?x 174 is

(A) Single strand DNA
(B) Single strand RNA
(C) Double strand DNA
(D) Double strand RNA

Question No:12

Nucleotides are building blocks of nucleic acids. Nucleotide is a composite molecule formed by

(A) (Base – sugar -phosphate)n
(B) Base sugar – OH
(C) Base -sugar – phosphate
(D) Sugar – phosphate

Question No:13

Which of the following is the simplest amino acid?

(A) Tyrosine
(B) Asparagine
(C) Glycine
(D) Alanine

Question No:14

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

(A) Enhance oxidative metabolism
(B) Are conjugated proteins
(C) Are exlusively synthesized in the body of a living organism as at present
(D) Help in regulating metabolism

Question No:15

Which one of the following makes use of RNA as a template to synthesize DNA

(A) Reverse transcriptase
(B) DNA dependant RNA polymerase
(C) DNA polymerase
(D) R NA polymerase

Question No:16

During transcription, holoenzyme RNA polymerase binds to a DNA sequence and the DNA assumes a saddle like structure at that point. What is that sequence called?

(A) CAAT box
(B) GGTT box
(C) AAAT box
(D) TATA box

Question No:17

Cell membrane in animals is composed mainly of the molecule of

(A) Lipids
(B) Proteins
(C) Lipids and Proteins
(D) Carbohydrates

Question No:18

In DNA which is absent?

(A) Adenine
(B) Thymine
(C) Guanine
(D) Uracil

Question No:19

Which is called soluble RNA

(A) n-RNA
(B) t-RNA
(C) m-RNA
(D) hn-RNA

Question No:20

Non genetic RNA is of

(A) Two types
(B) Three types
(C) Only one type
(D) None of these