I would say D, but I could be wrong
Answer:
The correct answer is a. Human papillomavirus
Explanation:
Human papillomavirus is the most common STI according to the center for disease control and prevention. It can pass from one people to another people from skin contact. They are responsible for causing condylomata( genital warts) in the patients.
The genital HPV infection is mostly caused by direct sexual contact with the infected person. HPV infection later can cause cancers like cervical cancer, genital cancer, throat cancer, etc if not treated properly.
Therefore students demonstrate an understanding of the material when they identify human papillomavirus as a cause of condylomata.
Simple version:
6 levels of environmental organization
individual
population
community
ecosystem
biome
biosphere
complicated version:
Exploring levels of biological organization
Biosphere
Ecosystem
community
population
organism
organs
tissues
cell
organelles
molecules
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.
