Proteins quiz-college bio

proteins quiz-college bio

DNA helicase

-unwinds the DNA helix/strantends the twist

-separates the DNA bases during DNA replication

Single strand binding proteins

-Binds to DNA and keeps the base pairs from rejoining/keeps DNA single strands for a short period of time

DNA Primase

-Adds a primer of RNA to begin DNA replication

DNA polymerase

-Adds new DNA nucleotides to the 3’ end of DNA or RNA during replication

-removes RNA primer

-proof reads the base pairing mistakes during replication

DNA Ligase

-Attaches Okazaki fragments (ligments of DNA) once the RNA primers have been replaced by DNA/ →→→ glues the → frangments together

Topoisomerase

-prevents over winding of DNA so that replication or transcription can countiue/ shoe example

Telomerase

-Adds telomeres to the ends of DNA to prevent the loss of genes during replication

RNA polymerase

-Adds new RNA nucleotides to the 3’ end of RNA during transcription/ mRNA