Which term involves a virus taking a piece of its bacterial hosts genome with it when it infects a new bacterium?

In this image, which plate is the best to count CFU’s?   

Which are steps in Koch’s postulates?

This is a second line of defense mechanism that involves over 30 proteins in the blood. In the end, it creates a membrane attack complex that lyses bacterial cells.

These proteins are signaling molecules that help defend against viruses. They can get released from virally infected cells and cause various effects like halting protein synthesis or causing a cell to undergo apoptosis.

A mosquito transmitting a malaria causing parasite in an example of a/an:

Disinfectants can be used on the skin.

Correctly classify these items as critical, semi critical or non critical

Archaea are:

Bacteriophages are ________ that infect __________.