DNA ligase is an enzyme which can connect two strands of DNA together by forming a bond between the phosphate group of one strand and the deoxyribose group on another.
DNA polymerase is an enzyme that synthesizes DNA molecules from deoxyribonucleotides, which are the building blocks of DNA. The enzymes play an essential role in DNA replication, usually working in pairs to produce two matching DNA stranges from a single DNA molecule.
DNA gyrase is an essential bacterial enzyme that catalyzes the ATP-dependent negative super-coiling of double-stranded closed-circular DNA
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.
1. especially in some complicated experiments u need someone to help you to complete that.for example one will pour thr chemical and other can hold the beaker 2. if one of them had some lab accidents such as chemical spilled in eye the other can immediately report to an adult or teacher
Chloroplasts contribute to the cell by housing the photosensitive pigment chlorophyll which is able to facilitate the conversion of light energy to chemical energy.
