Answer:
When patient takes in antibiotics the resistance bacteria gets a competitive survival advantage over the normal sensitive bacteria and hence grows faster.
Explanation:
- Bacteria can acquire resistance by taking in plasmids containing MDR (Multi-Drug Resistance) gene cassettes. The MDR genes produces proteins that can:
- Render the antibiotic ineffective to act on its target by inducing chemical modifications on the drug.
- Promote efflux of the drug from the bacterial cell so that the drug cannot act upon its target.
- When a healthy person ( having no prior exposure to the antibiotic) is infected by bacteria ( both sensitive and resistant varieties):
- A competition develops for the host cells and nutrients between the sensitive and the resistant variety.
- This mutual competition restricts either of the sensitive or resistant bacterial strain to grow profusely.
- When a person (having prior antibiotic exposure), gets infected by bacteria ( both sensitive and resistant varieties) and is exposed to the same antibiotic:
- The sensitive variety, due to its sensitivity towards the drug, gets killed.
- The resistant variety, due to its MDR genes, bypasses the lethal effect of the drug and survives.
- These surviving resistant bacteria can now infect all the available host cells and utilise all the available nutrients without facing any competition and multiply rapidly.
Answer: 6
Explanation:The number of protons present in the nucleus of an atom is known as Atomic Number. Atomic Number helps in determining the chemical properties of an atom. Thus it is given that the given ion contains 6 protons thus the atomic number of the ion will be six. hope this helps
The order that jennifer must take, to carry out the investigation is
- establish a command post.
- preserve evidence
- ensure the safety of everyone on site.
- jot down observations about the scene.
- establish a perimeter of the crime scene.
<h3>What is the role of the fire investigator?</h3>
The investigator will seek to establish whether the cause of the fire was
- accidental
- natural
- criminal
- or undetermined.
Evidence directly linked to fire can be found at the point of origin, such as fuel sources, incendiary devices, electrical appliances, among others.
With this information, we can conclude that the investigator will seek to establish whether the cause of the fire.
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A mouse has a greater ratio of surface area rather than a hippopotamus.
