TLS Online TPP Program

#Question id: 33395


Which of the following is correct for Zinc Finger Motif 

a. Zinc atom stabilizes the structure / fold by coordination bonds. 
b. Each motif contains about 30-50 amino acids.
c. Contains regular patterns of Cys / His, which coordinate with Zinc atom.

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. A only
  2. B only
  3. A & B Only
  4. A, B & C only
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TLS Online TPP Program

#Question id: 3053

#Unit 2. Cellular Organization

Bacterial culture contains 1000/ mL in the exponential growth phase. If you consider a generation time of 20 minutes, the total number of organisms / mL 60 minute will be

TLS Online TPP Program

#Question id: 3054

#Unit 2. Cellular Organization

A pure culture in exponential growth phase has a bacterial concentration of 6.4 x 10^8 cells/ml. If the bacterium has a generation time of 1 h, how long ago was the cell concentration 8.0 x 10^7 cells/ml?

TLS Online TPP Program

#Question id: 3055

#Unit 2. Cellular Organization

300 CFU will form on petriplate if 0.1ml sample plating from 10^6 diluted sample. Original sample contain bacteria per ml is

TLS Online TPP Program

#Question id: 3056

#Unit 2. Cellular Organization

Ten bacteria were inoculated into a rich medium. If at the end of ten hours the total number of cells is 10^4, then the number of elapsed generations and the generation time respectively is

TLS Online TPP Program

#Question id: 3057

#Unit 2. Cellular Organization

Mean generation time of bacteria is 20 min. 6 hours of incubation, the bacterial population increases from 10^3 cells to

TLS Online TPP Program

#Question id: 3058

#Unit 2. Cellular Organization

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