A.   the destruction or removal of all microbial life and viruses

B.   the destruction or removal of the majority of the pathogens

C.   some microbes that remain

D.   two of these are correct

A.   the proteins of a pathogen

B.   the cell membrane of a pathogen

C.   the cell wall of a pathogen

D.   all of these are correct

A.   chemical

B.   extreme

C.   minimal

D.   physical

A.   All of these are correct

B.   If used on body cells, it can cause mutations and lead to cancer

C.   It cannot penetrate solid surfaces

D.   It cannot penetrate cloudy liquids

A.   longer

B.   shoter

A.   All of these are appropriate ways to prepare the filter paper disk method.

B.   A bacterial lawn of the targeted bacterial species is prepared and filter paper disks submerged in various disinfectants are placed on the plate.

C.   The targeted bacterial species is isolated using the streak plate method and filter paper disks submerged in disinfectants are placed on the isolated colonies.

D.   The broth culture of a bacterial species is poured through a filter paper and placed on a sterile agar plate.

A.   Two of these are correct

B.   The region around the disk that shows growth

C.   The region around the disk that shows no growth

D.   The thick layer of a single species of bacteria

A.   TRUE

B.   FALSE

A.   They are compounds made from scratch in a laboratory to inhibit or kill organisms

B.   They are effective against viruses

C.   They are natural compounds made by an organism that can be used to inhibit or kill other organisms.

D.   They are natural compounds that are modified in the laboratory to inhibit other organisms

A.   Pour the entire contents of a broth culture on the surface of an agar plate.

B.   Using an inoculating loop, apply the streak plate method to obtain isolated colonies

C.   Using a cotton swab, apply the bacteria across the surface of the agar

D.   Perform serial dilutions on a broth culture and pipet a small amount in melted agar.