BIOMOLECULES AND ENZYMES

BIOLOGY

NUCLEIC ACIDS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What are the subunits of DNA and their function?
A
nucleotides that store information
B
monosaccharides that provide quick energy for the cell
C
lipids that store energy and provide insulation
D
proteins that provide the building blocks for the structural components of organisms
Explanation: 

Detailed explanation-1: -Nucleotides are the subunits of DNA. The four nucleotides are adenine, cytosine, guanine and thymine. Each of the four bases has three components, a phosphate group, a deoxyribose sugar and a nitrogen-containing base.

Detailed explanation-2: -Nucleotides are the constituents of nucleic acids (DNA, RNA), which store and transmit genetic information. They also act as carriers of chemical energy in cells, as enzyme cofactors, and as secondary messengers. Nucleotides consist of a nitrogenous base, a five-carbon sugar, and a phosphate group.

Detailed explanation-3: -Nucleotides are composed of three subunit molecules: a nucleobase, a five-carbon sugar (ribose or deoxyribose), and a phosphate group consisting of one to three phosphates. The four nucleobases in DNA are guanine, adenine, cytosine and thymine; in RNA, uracil is used in place of thymine.

Detailed explanation-4: -Each chain is made up of repeating subunits called nucleotides that are held together by chemical bonds. There are four different types of nucleotides in DNA, and they differ from one another by the type of base that is present: adenine (A), thymine (T), guanine (G), and cytosine (C).

Detailed explanation-5: -The part of the nucleotide that stores genetic information is A. nitrogen base. There are five main bases namely adenine, guanine, cytosine, thymine, and uracil. The sequence of these bases in DNA or RNA determines the genetic information contained in the molecule.

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