4.1.1 Obligate intracellular spp.

Question 1

Characteristics:

DNA / RNA: (+)
Obligate intracellular parasites (+)
Peptidoglycan in cell wall (+)
Growth on non living medium (-)
Contain ribosomes (+)
Sensitivity to antimicrobial agents (+)
Sensitivity to interferon (+)
Binary fission (+)

Answer 1

Chlamydiae

Question 2

Characteristics:

DNA / RNA: (+)
Obligate intracellular parasites (-)
Peptidoglycan in cell wall (+)
Growth on non living medium (+)
Contain ribosomes (+)
Sensitivity to antimicrobial agents (+)
Sensitivity to interferon (-)
Binary fission (+)

Answer 2

Typical bacteria

Question 3

Characteristics:

DNA / RNA: (+)
Obligate intracellular parasites (+)
Peptidoglycan in cell wall (-)
Growth on non living medium (-)
Contain ribosomes (+)
Sensitivity to antimicrobial agents (+)
Sensitivity to interferon (-)
Binary fission (-)

Answer 3

Rickettsiae

Question 4

Characteristics:

DNA / RNA: (+)
Obligate intracellular parasites (-)
Peptidoglycan in cell wall (-)
Growth on non living medium (+)
Contain ribosomes (+)
Sensitivity to antimicrobial agents (+)
Sensitivity to interferon (-)
Binary fission (-)

Answer 4

Mycoplasmas

Question 5

NOTE: ALl bacteria contains DNA and RNA

Question 6

Bacteria that are obligate intracellular parasite?

Answer 6

Chlamydiae
Rickettsiae

Question 7

Only organisms that has peptidoglycan base from the 3 bacteria?

Answer 7

Chlamydiae

Question 8

Why Chlamydiae and Rickettsiae cannot grow on the non living medium?

Answer 8

They are obligate intracellular parasite meaning, they need host to grow

Question 9

The only bacteria that is sensitive to the interferon base on the 3 bacteria?

Answer 9

Chlamydiae

Question 10

The only bacteria that can do binary fisson base on the 3 bacteria?

Answer 10

Chlamydiae (Because of cell wall)