The bacteriophage can lysogenize after infecting a bacterium, i.e. integrate into the host bacterial chromosome by site-specific recombination, and may reside there for many generations before an excision event regenerates the viral genome in an infective form.  Which one of the following is not a component of these events?

TLS Online TPP Program

#Question id: 31420

#XL - S Microbiology

In twitching motility, the retraction of Type IV pili is powered by:

TLS Online TPP Program

#Question id: 31421

#XL - S Microbiology

Which option(s) correctly match(es) the Adherence factor in a bacterial cell (Column I) with their corresponding functions (Column II). 

COLUMN I	COLUMN II
P. Fimbriae	i. Cell envelopes of some archaeobacteria that may promote adherence to surfaces
Q. Glycocalyx	ii. help attach bacteria to other bacteria or to solid surfaces
R. S layer	iii. Cell wall components in gram-positive bacteria that aid in adhesion
S. Teichoic acid	iv. viscous (sticky) and gelatinous polymer

TLS Online TPP Program

#Question id: 31422

#XL - S Microbiology

Which type of bacteria have flagella spread evenly over their entire surface?

TLS Online TPP Program

#Question id: 31423

#XL - S Microbiology

Correctly match the bacterial type in Column I with their corresponding environmental niche in Column II.

COLUMN I	COLUMN II
P. Psychrotrophs	i. Can grow at 180°C or Higher
Q. Thermophile	ii. pH greater than 8
R. Alkalophile	iii. Optimum 30°C to maximum around 35°C
S. Halophile	iv. Growth more rapid at high hydrostatic pressure
	v. Salt concentration greater than 2M

TLS Online TPP Program

#Question id: 31424

#XL - S Microbiology

Which bacterial cell wall component is recognized by the immune system as an endotoxin?

TLS Online TPP Program

#Question id: 31425

#XL - S Microbiology

In E.coli, the bd branch of the electron transport chain is utilized under__