NEET BIOLOGY

CELL STRUCTURES AND FUNCTION

BIO MOLECULES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Helicase is an example of a biomolecule that can destroy bonds between DNA strands during DNA replication.What biomolecule is helicase?
A
Carbohydrate
B
Lipid
C
Protein
D
Nucleic Acid
Explanation: 

Detailed explanation-1: -Helicases are molecular motor proteins that manipulate DNA and RNA [1]. They hydrolyze ATP and transduce chemical energy to move along the DNA, separating the double-stranded (ds) DNA, or removing proteins that might block progress of replication, transcription, or repair of DNA [2–4].

Detailed explanation-2: -Helicases are enzymes that bind and may even remodel nucleic acid or nucleic acid protein complexes. There are DNA and RNA helicases. DNA helicases are essential during DNA replication because they separate double-stranded DNA into single strands allowing each strand to be copied.

Detailed explanation-3: -Helicases are molecular motor proteins present in viruses, bacteria, and eukaryotes [1, 2]. They harness the chemical energy of ATP hydrolysis to break the energetically stable hydrogen bonding between the duplex DNA.

Detailed explanation-4: -Helicases are motor proteins that move directionally along a nucleic acid phosphodiester backbone, separating two hybridized nucleic acid strands (hence helic-+-ase), using energy from ATP hydrolysis.

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