Tick the correct option to complete the sentence.
A. Two strands of DNA are held together by bonds. (hydrogen/nitrogen)
B. ___ is the pentose sugar present in DNA. (Ribose/Deoxyribose)

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Solution

A. hydrogen
B. Deoxyribose

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Similar questions

Correct the following statements if there is any mistake.

(a) The four nitrogenous bases in the DNA are Guanine, Thiamine, Adrenaline and Cytosine.

(b) Genes are specific sequences of bases on a chromosome.

(d) Nucleosomes are groups of cysteine molecules surrounded by DNA strands.

(e) If there are 46 chromosomes in a cell, there will be 23 chromatin fibres inside the nucleus during interphase.

20 %

6.8 n m

List-I	List-II
a. Nucleoside	$1$ . Deeply stained body containing rRNA
b. Nucleotide	$2$ . Portion of a DNA or RNA composed of one deoxyribose(in DNA) or ribose(in RNA) plus a purine or a pyramidine
c. Nucleolus	$3$ . Short disk-shaped cylinders composed of nucleoproteins and spaced at roughly $100$ A intervals on chromosomes
d. Nucleosome	$4$ . Portion of DNA or RNA composed of a purine or pyramidine base, a deoxyribose (in DNA) or a ribose (in RNA) and phosphoric acid

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