00:01
What do bacteria use restriction enzymes for? is it for dna replication? is it to degrade the bacterial cells dna? is it to degrade viral dna? or is it to attach bits of dna together? so let's start with what is a restriction enzyme? so it's an enzyme, as the name suggests.
00:21
And what it does is it recognizes specific dna sites and cleaves at those sites.
00:30
So it looks for a particular sequence and it breaks the strands there.
00:35
It's not pulling apart the two strands like a helicase does.
00:39
It's actually breaking the backbone.
00:41
So looking at these answers, we can roll up d because it's the opposite about it's not a ligase, it's a restriction in time.
00:49
So it's not attaching dna to each other.
00:52
Okay, now let's look at the others.
00:54
Would it be with a during dna replication? well, no, because during dna replication, you're not a looking to break the backbone, all you need is to unwind the dna and make it single -stranded.
01:07
So you need a heliocase, you don't need a restriction enzyme...