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Both prokaryotic and eukaryotic cells use which of the following to turn certain genes on or off?

rlemus87

wrote...

Posts: 18

Rep:

11 years ago

Both prokaryotic and eukaryotic cells use which of the following to turn certain genes on or off?

DNA ligase
RNA transcriptase
intron segments
regulatory proteins
nucleosome packing

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rkearl27

wrote...

#1

11 years ago

Regulatory proteins.

Regulatory proteins are the proteins that control gene expression. The others are not.

DNA ligase stitches together broken DNA strands; RNA transcriptase is another word for RNA polymerase- it makes RNA from DNA. Intron segments are simply segments of DNA that do not code for proteins... and finally, nucleosome packing is the packaging of DNA into chromosomes.

bulbul

wrote...

#2

11 years ago

regulatory proteins; ligaseis used to connect nucleotides, transcriptase is used to go from rna to dna, prokaryotes lack introns

rlmst23

wrote...

#3

11 years ago

REGULATORY PROTEINS

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