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#Question id: 15608


Melanins are light-absorbing biopolymers useful as topical sunscreens, sunlight-protective coatings for plastics, etc. Which gene is used for producing melanin. 

#XL - S Microbiology
  1. tyrosinase gene only
  2. Copper ions only
  3. tyrosinase gene and copper ions
  4. Nitrilase gene only 

Answer:- Option(s): 3


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TLS Online TPP Program

#Question id: 1036

#XL - T Zoology

A urine sample with more than 100,000 organisms is considered indicative of infection. A urine sample containing 5,000 bacteria, with a generation time of 30 minutes, sits for 3 hours before finally being assayed. How many bacteria will then be present within the sample?

TLS Online TPP Program

#Question id: 1037

#XL - T Zoology

In a rapidly multiplying bacterial population, cell numbers increase

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#Question id: 1039

#XL - T Zoology

One of the first chemicals used by Lister to prevent surgical infections was

TLS Online TPP Program

#Question id: 1040

#XL - T Zoology

Why might it be easier to determine the bacterium that caused pneumonia than one that caused a wound infection?

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#Question id: 1041

#XL - T Zoology

The lactobacilli, in their role as normal flora of the vagina, help the vagina resist infection by contributing to

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#Question id: 1043

#XL - T Zoology

Nematodes

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