BIOMOLECULES AND ENZYMES

BIOLOGY

PROTEINS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following statements about DNA is NOT true?
A
DNA is found in all organisms.
B
DNA is made up of five subunits.
C
DNA has a structure like a twisted ladder.
D
Mistakes can be made when DNA is copied.
Explanation: 

Detailed explanation-1: -Hence, the correct answer is ‘It contains the sugar ribose’.

Detailed explanation-2: -DNA, which stands for deoxyribonucleic acid, resembles a long, spiraling ladder. It consists of just a few kinds of atoms: carbon, hydrogen, oxygen, nitrogen, and phosphorus. Combinations of these atoms form the sugar-phosphate backbone of the DNA–the sides of the ladder, in other words.

Detailed explanation-3: -Which of the following statements regarding DNA replication is false? Explanation: The only false statement is that DNA replication of the lagging strand is continuous.

Detailed explanation-4: -Nucleotides that make the DNA strands contain deoxyribose sugar, phospate molecule and one nitrogenous base out of adenine, guanine, thymine and cytosine. Uracil is never a part of nucleotide of DNA.

There is 1 question to complete.