Answer:
In acid-fast staining, carbon fuchsin is used as a primary stain which dissolves the mycolic acid present in the cell wall of <em>Mycobacterium smegmatis </em>and penetrates through it which results in staining <em>Mycobacterium</em> red.
Staphylococcus aureus cell wall does not contain mycolic acid so carbon fuchsin does not penetrate its cell wall, therefore, it becomes colorless after destaining with acid alcohol.
After destaining step methylene blue is added to stain non-acid-fast bacteria blue. So if I mistakenly forgot to use methylene blue during the procedure <em>Mycobacterium smegmatis</em> will appear red due to carbon fuchsin present in their cell wall and S<em>taphylococcus aureus</em> will appear colorless because it is destained.
The answer is letter
D.
<span>
Economists often use
the aggregate supply and demand model to reflect the total amount of goods and
services required at all possible price levels during a specific period. It
reflects the overall price of foods and services in an economy for a given
period and is often illustrated with the supply-demand curve. This shows the
relationship between price levels and quantity of output that a particular firm
is willing to provide to the general public.</span>
B Dartos muscle is not one of that
The mutation occurs in somatic cells from the skin. The mutated cells usually die causing sunburn, in worst cases, it can cause skin cancer. The DNA that is transmitted to the offspring is located in the germinative cells that are not affected.
Answer:
Exons
Explanation:
The eukaryotic DNA is made up of coding segments (EXONS) and non-coding segment (INTRONS).
The pre-mRNA may contains the exons and Introns while during RNA splicing the Introns are removed from messenger RNA.
The mature mRNA which contains only exon will code for protein formation.
