True. Some bacterial cells are resistant to a variety of antimicrobials because they actively pump the drugs out of the cell.
A significant resistance mechanism in Gram-negative bacteria is drug efflux. It expel solutes from the cell. Antimicrobials and metabolites are just a few of the hazardous compounds that Efflux pumps help bacteria remove from their interior environments so they can regulate it.
The main efflux systems in Gram-negative bacteria are members of the RND superfamily and typically consist of an outer membrane protein channel, a periplasmic protein, and a cytoplasmic membrane pump. The most common example is MFS (such as Bmr and Blt in Bacillus subtilis) and the ABC transporters.
Learn more about antimicrobials here:
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mean is all values added together and divided by number if values. mode is most often. median is middle cross from both sides
The step that is part in the
formation of the batholiths is a single pluton enlarges into a huge mass by melting
the rock around it. A single pluton does not enlarge into a huge mass, instead,
it will melt due to the buoyant magma that surrounds it.
Sound waves are both compressional and longitudinal, (although we frequently draw them as transverse waves).
Longitudinal waves are where the particles of matter collide into one another, pushing them into the next and then oscillating back. This is how sound travels. This is also why sound can only travel through a medium, it cannot travel through a vacuum, as is shown here:
Answer:
In the African savanna, more wildebeests are born than the environment can support. Which is most likely to happen over a period of years as a result? Individuals that are well suited to the environment reproduce, and those that have lesser adaptations die before they reproduce.
