(A) The $DNA$ molecule consists of two polynucleotide chains. Each nucleotide is composed of a deoxyribose sugar,a phosphate group,and a nitrogenous b

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(A) The $DNA$ molecule consists of two polynucleotide chains. Each nucleotide is composed of a deoxyribose sugar,a phosphate group,and a nitrogenous base. The backbone of the $DNA$ strand is formed by the alternating sequence of deoxyribose sugar and phosphate groups linked by phosphodiester bonds. The nitrogenous bases project inward from this backbone.

Class 12 Biology Molecular Basis of Inheritance The DNA

Easy

The backbone of $DNA$ is made up of:

A
Sugar and phosphate
B
Sugar and nitrogenous bases
C
Phosphate and nitrogenous bases
D
Only sugar

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Class 12 Questions

Class 12

Biology Questions

Chapter

Molecular Basis of Inheritance

Subtopic

The DNA

Which of the following nitrogenous bases are common for both $RNA$ and $DNA$?

Medium

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The three-dimensional structure of the $t-RNA$ molecule is . . . . . . .

Medium

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What will be the length of a $dsDNA$ strand,if it contains $100$ base pairs?

EasyMHT CET 2023

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Match the following columns $:-$

Column-$I$ Column-$II$

$(a)$ $\phi \times 174$ bacteriophage $(i)$ $48502 \ \text{b.p}$

$(b)$ Human (diploid) $(ii)$ $5386$ bases

$(c)$ $E. coli$ $(iii)$ $6.6 \times 10^9 \ \text{b.p}$

$(d)$ $\lambda$-phage $(iv)$ $4.6 \times 10^6 \ \text{b.p}$

Column-$I$	Column-$II$
$(a)$ $\phi \times 174$ bacteriophage	$(i)$ $48502 \ \text{b.p}$
$(b)$ Human (diploid)	$(ii)$ $5386$ bases
$(c)$ $E. coli$	$(iii)$ $6.6 \times 10^9 \ \text{b.p}$
$(d)$ $\lambda$-phage	$(iv)$ $4.6 \times 10^6 \ \text{b.p}$