Battling Bacterial Resistance The Evolution of Antibiotic Resistance

Antibiotic resistance occurs when bacteria mutate and resist treatment, posing a global health threat. Resistance spreads through vertical and horizontal gene transfer, making infections harder to treat. Misuse and overuse of antibiotics accelerate this process. Proper use and preventive measures are crucial to control resistance.

What is the primary cause of antibiotic resistance in bacteria?

• The patient's immune system

• Mutations in bacterial DNA

• Overuse of antibiotics by doctors

• Poor hygiene practices

Which of the following is NOT a mechanism by which bacteria resist antibiotics?

• Pumping antibiotics into the cell

• Modifying the antibiotic's target

• Preventing antibiotic entry

• Destroying antibiotics enzymatically

How do mutations that confer antibiotic resistance persist in bacterial populations?

• They are selected for in the presence of antibiotics

• They occur only in laboratory settings

• They provide a growth advantage in the absence of antibiotics

• They are always beneficial regardless of antibiotic presence

What is horizontal gene transfer in the context of antibiotic resistance?

• Transfer of genes within a single cell

• Transfer of genes through environmental factors

• Transfer of genes between different species

• Transfer of genes from parent to offspring

What role do plasmids play in antibiotic resistance?

• They modify the antibiotic's target

• They prevent antibiotics from entering cells

• They carry resistance genes between bacteria

• They destroy antibiotics

Why are infections by antibiotic-resistant bacteria harder to treat?

• They grow faster than non-resistant bacteria

• They are immune to all forms of treatment

• They require more expensive and toxic treatments

• They are less likely to be detected by the immune system

What is a 'superbug'?

• A virus that causes severe illness

• A bacterium that grows extremely fast

• A virus that is immune to vaccines

• A bacterium resistant to most common antibiotics

What accelerates the process of antibiotic resistance?

• Proper use of antibiotics

• Genetic engineering

• Natural selection

• Misuse and overuse of antibiotics

How can the spread of antibiotic resistance be controlled?

• Using antibiotics for all infections

• Prescribing antibiotics only when necessary

• Using antibiotics in healthy animals

• Avoiding antibiotics completely

Why should antibiotics not be used to promote growth in healthy animals?

• It leads to antibiotic resistance

• It is ineffective

• It causes rapid weight loss

• It is too expensive