Nucleic acids Flashcards
(14 cards)
what is the functional unit of genetic information
gene
what are the informational macromolecules
nucleic acids and proteins
supercoils are inserted or removed by
topoisomerases
supercoiling is not a feature of eukaryotes so how do eukaryotes compact their DNA
by DNA tightly wound on histones
in eukaryotes where does replication and transcription occur
in the nucleus
examples of genetic elements
plasmids, transposable elements, chromosomes, virus genomes and organellar genomes
the genome of e.coli is
4.64mbp
the precursor of every dna molecules is
deoxynucleoside 5’ triphosphate
where does dna synthesis begin
in the oric of the chromosome (origin of replication)
what role does DNA polymerase III play
major role
what roles does DNA polymerase play
minor role
what is the function of DNA polymerase III
its the main DNA polymerizing enzymes
what is the function of DNA polymerase I
its removes the RNA primer and fills in the gaps
what is the function of single stranded binding proteins
they bind to the DNA strands to prevent them from bind together
