The graph that follows shows the survival of four different E. co...

Question

The graph that follows shows the survival of four different E. coli strains after exposure to increasing doses of ultraviolet light. The wild-type strain is normal, but the other strains have a mutation in either a gene called uvrA, a gene called recA, or both. (a) Which strains are most sensitive to UV light? Which strains are least sensitive?

Accepted Answer

Hello everyone and welcome to today's video. So today we have that UV light produces electromagnetic energy that can destroy the ability of organisms to reproduce by causing photochemical reactions in. And one thing that we need to understand is that this UV light has very low or small wavelength because of this it is going to attack or it's going to affect new click assets in these microorganisms that is going to be affecting. Now there's two types of nucleic acids that we need to worry about and these are D. N. A and Arnie and the way that these ultraviolet light is able to affect them is that it is going to attack the basis in them. So this is what is going to be targeting. So now we know this we can pretty much assume that ultraviolet light is going to target nuclear assets such as DNA and RNA. Which is going to be answer choice both DNA and RNA that we have final answer to our question. I really hope this video helped

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