Eduprobe
Question:
Which of the following statements is correct?
Histones are acidic in nature that form core for DNA packaging.
Template with polarity 5' - 3' has continuous DNA replication.
Catalytic converter can separate particulate matter of diameter less than 2.5 micrometers.
Lactobacillus is not present in dough used in idli formation.
Solution:
Catalytic converter is used to reduced the emissions from vehicles and automobiles. It can separate particulate matter of diameter less than 2.5 micrometers. These fine particulate matter if inhaled causes respiratory problems and damage to lungs. A histone is an octamer made up of the eight protein complex. It is found at the center of a nucleosome core surrounded by the segment of DNA in eukaryotes. Histone is alkaline in nature and DNA surrounding it is acidic in nature. Fermentation of idli batter is done largely by lactic acid bacteria called as Lactobacillus. This bacteria produces lactic acid in the idli batter. DNA polymerase enzyme catalyses polymerisation only in one direction, that is 5' - 3'. Hence, template strand with polarity 3' - 5' has continuous DNA replication while template strand with polarity 5' - 3' has discontinuous DNA replication.Thus, the correct answer is option A.