Chromatin is the material that makes up a chromosome that consists of DNA and protein. The major proteins in chromatin are proteins called histones.
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<em><u>They act as packaging elements for the DNA.</u></em></h3>
The reason that chromatin is important is that it's a pretty good packing trick to get all the DNA inside a cell.
Answer:
Option A. inducer.
Explanation:
The lac operon is an inducible operon. The presence of lactose allows the gene expression for the metabolism of lactose. The IPTG mimics the structure of allolactose. The allolactose is the direct inducer of the gene of lac operon. Lactose by converting to allolactose act as a inducer. The repressor in the lac operon binds with the operator region and thus inhibits the process of transcription.
The allolactose binds with repressor and thus inhibits its binding to operator thereby initiating the process of transcription. As the IPTG mimics allolactose so it binds with repressor and act as a inducer. Thus, option A is correct.
Any broad spectrum antibiotics can be used against bacterial infection, but beta-lactams like penicillin, amoxicillin and cephalosporin as well as macrolides are more effective againts gram-positive bacteria.
Research study show that sea urchins displayed similarity with humans like having an immune system and genetic material (DNA). Both belong to the deuterostomes. These animals are similar based on their early stage of development specifically during the embryos form.
Answer:
outside the cell..........
