Intro to Bact

Question 1

CCDA is a …. agar to identify …..

Answer 1

selective

campylobacter sp

Question 2

XLD is a …. agar used in isolation of Salmonella and …. spp.

Answer 2

selective
Shigella

Salmonella, can ferment the sugar xylose - produce H2S - red with black centres
Shigella cant - remain red

Question 3

MacConkey is a both …. and ….. agar, which can differentiate between ……. and …… bacteria

Answer 3

differential and selective
LF and NLF

NLF: colourless pale colonies
LF: pink colonies
Entero bacteria

Question 4

Transduction is the process by which ….. is transferred from one bacterium to another by ……

.

Answer 4

DNA
bacteriophage (virus)

lysogenic cycle bacteriophage nucleic acid integrates with host genome

Question 5

A virus that infects and replicates within a bacterium.

Answer 5

Bacteriophage

Question 6

Transformation is the process by which ……. DNA is introduced into a …… cell

Answer 6

foreign
bacterial

• useful for cloning.

Question 7

Plasmid can be transferred. So,cell with -ve plasmid can acquire material from +ve plasmid resulting in…..

Answer 7

resistance

Question 8

Flagellum in one side of the cell

Answer 8

Monotrichous

Question 9

Amphitrichous

Answer 9

One Flagellum in each side of the cell

Question 10

Peritrichous

Answer 10

Flagellum around the perimeter

Question 11

Flagella allows

Answer 11

motility

Question 12

fimbriae allows

Answer 12

adherence

Question 13

Bacteria replicate by….

Answer 13

binary fission - identical progeny