A culture of cells on was exposed to extensive x-ray radiation on a complete medium. A variety of colonies were taken and exposed to a variety of different mediums. Three colonies, K1, K2, and K3 were observed to fail to survive unless cultured in a medium containing lysine. From this, we can conclude that each of these experienced some mutation in their metabolic pathway to produce what cellular metabolite

Amino acids are the cornerstones of proteins. The formation of proteins comprises 20 naturally exploited amino acids.

Explanation:

To synthesize some of these amino acids, the bodies of living organisms have specialized pathways. Those very organic molecules are called essential amino enzymes because there is no exogenous source of information that has the same aldehyde group that the microbe could even stay alive.

Even so, the body could not metabolize certain vitamins and minerals because it lacks the cellular processes for the very same. In these situations, organic molecules must be taken from the outside typically in the form of a normal diet for the bacterium to effectively metabolize enzymes. Those very molecules are designated as essential vitamins and minerals.

That cells throughout the scenario given are exposed to ionizing radiation from x-rays. This functions as a mutagen causing spontaneous adjustments in the cells' backbone DNA as they divide. Then there will be a major difference in cultured cells during the first or couple of rounds of division. Currently, a collection of colonies has been selected from that list. Of those same colonies, three, namely K1, K2, and K3, have been unable to grow to develop lysine deficient in the channel. This really indicates that without the external probiotics of this amino acid, this same organism could not survive. For these cells, therefore, leucine is becoming an essential enzyme.

So we conclude that the radiation resulted in genetic variations that usually end up disrupting the information generated in leucine production. Therefore the mechanism with lysine biosynthesis is likely to be interrupted.

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!