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

NEET UG Botany MCQ-108

Question No:1

The term nucleic acids was given by

(A) Altmann
(B) Meishcer
(C) Fishcher
(D) Watson

Question No:2

Nucleic acids were discovered in the nuclei of

(A) Blood cells
(B) Pus cells
(C) Meristamatic cells
(D) Muscle Cells

Question No:3

If there is a double stranded DNA virus particle with 20,000 base pairs, how many nucleotides will be present in it?

(A) 20,000
(B) 10,000
(C) 5,000
(D) 40,000

Question No:4

A+G = C+T, then it is

(A) ss RNA
(B) ds RNA
(C) ssDNA
(D) ds DNA

Question No:5

The unit which is formed by sugar and nitrogenbase of ?-glycosidic bond is called

(A) Nucleoside
(B) Nucleotide
(C) Glycoside
(D) Purine

Question No:6

The proteins associated with nucleic acids are

(A) Scleroproteins
(B) Albumins
(C) Histones
(D) Globulins

Question No:7

(A) : Starch gives blue coloration with iodine.
(R) : Starch forms helical secondary structure and holds I2 molecules in the helical portion

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:8

(A) : Grape contains glucose.
(R) : Glucose is called fruit sugar.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:9

(A) : Nucleic acids are polymers nucleotides.
(R) : Nucleotides are acidic in nature.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:10

(A) : ATP is the energy currency of the cell.
(R) : ATP is a nucleoside.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:11

(A) : Uracil is not seen in DNA.
(R) : Thymine is absent in RNA.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:12

(A) : The distance between the two strands of DNA double helix is uniform..
(R) : In ds DNA purine paris with pyrimidine and viceversa.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:13

(A) : A+G/T+C ratio can be used to identify the species.
(R) : Purine and pyrimidine ratio changes with age or tissue.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:14

(A) : Replication of DNA begins at promoter site.
(R) : Transcription begins at ori.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:15

(A) : Dephosphorylated nucleosides are nucleotides.
(R) : Nucleoside consists of sugar nitrogen base and phosphate.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:16

(A) : Amount of nuclear DNA is constant in all somatic cells of an organism.

(R) : DNA is found in somatic cells only.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:17

(A) : DNA is called as store house of genetic information.
(R) : DNA is carrier of genetic information from parents to offsprings in all cellular organisms.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:18

(A) : Purine, pyrimidines do not exist in 1:1 ratio in rRNA.
(R) : rRNA folds to from pseudohelices.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:19

(A) : tRNA can read the codons of mRNA
(R) : The anti codon of tRNA is complementary to the codons of mRNA.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong

Question No:20

(A) : mRNA is most unstable of RNAs.
(R) : rRNA is the largest of RNAs.

(A) Both ( A ) and (R) are true and (R) is the correct explanation of ( A )
(B) Both (A) and (R) are true and (R) is not the correct explanation of (A)
(C) (A) is true but (R) is false
(D) Both (A) are (R) wrong