TLS Online TPP Program

#Question id: 11475


Rods exposed to light will ________.

#XL - T Zoology
  1. depolarize due to the opening of sodium channels
  2. hyperpolarize due to the closing of sodium channels
  3. depolarize due to the opening of potassium channels
  4. hyperpolarize due to the closing of potassium channels
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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__

TLS Online TPP Program

#Question id: 31426

#XL - S Microbiology

What distinguishes the second lag phase from the first in a diauxic growth curve?