SSC MTS EXAM

SSC

BIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
DNA or deoxyribonucleic acid is?
A
genetic material
B
really long word
C
found in only animals
D
found in organisms with cells
Explanation: 

Detailed explanation-1: -Deoxyribonucleic acid (abbreviated DNA) is the molecule that carries genetic information for the development and functioning of an organism. DNA is made of two linked strands that wind around each other to resemble a twisted ladder-a shape known as a double helix.

Detailed explanation-2: -Because of its structure, DNA is commonly referred to as deoxyribonucleic acid. The nucleic acid has a phosphate backbone with bases such as adenine, cytosine, guanine, and thymine, while the deoxyribose portion contains pentose sugar. The-OH group at position two of the sugar ring is absent in deoxyribose.

Detailed explanation-3: -What is DNA made of? DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.

There is 1 question to complete.