TLS Online TPP Program

#Question id: 35803


Among the following statements, which is/are False regarding the replication of DNA? 

#XL - T Zoology
  1. Replication is bidirectional and semi conservative in nature.
  2. Replication in Prokaryotes takes place at multiple Ori sites simultaneously. 
  3. Both the strands replicate in discontinuous manner. 
  4. One strand replicates in continuous while the other replicates in discontinuous manner.
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TLS Online TPP Program

#Question id: 31419

#XL - S Microbiology

Twitching motility in bacteria is primarily mediated by:

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?