Antibiotic ‘DEF’ disrupts the bacterial cell

wall by inhibiting peptidoglycan synthesis. Explain three

mechanisms by which bacteria could become resistant to antibiotic DEF.

The process of PCR involves repeated cycles of

three main steps. Which of the following is not one of these steps?

The principle of herd immunity relies on which

of the following?

The COVID pandemic hit and you want to design a PCR kit to identify the positive patients. 

B. What all components will you add to the PCR testing kit?

What is the primary requirement for the

activation of B cells during the immune response?

resistance occurs when bacteria

evolve mechanisms to survive exposure to antibiotics.

The COVID pandemic hit and you want to design a PCR kit to identify the positive

patients. 

A.

What all information you will need to design the PCR test?

In PCR, primers are essential because they:

Which type of vaccine contains weakened live

pathogens?

The "herd immunity" effect in

vaccination primarily helps to: