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TLS Online TPP Program

#Question id: 31426

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

#XL - S Microbiology
  1. It occurs after the first carbon source is depleted, requiring enzyme synthesis for the second source
  2. It results from bacterial cell death due to toxin accumulation
  3. It signifies the completion of bacterial growth
  4. It occurs because bacteria stop dividing permanently 
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TLS Online TPP Program

#Question id: 768

#XL - Q Biochemistry

MicroRNAs are important gene regulators, but the miRNAs are also regulated in turn by other RNAs. Which, if any, of the following classes of RNA are not known to contain RNAs that regulate miRNAs?
TLS Online TPP Program

#Question id: 27373

#XL - T Zoology

Three major domains of DICER are,
TLS Online TPP Program

#Question id: 793

#XL - T Zoology

What is the average size (in bp) of a mature t-RNA?
TLS Online TPP Program

#Question id: 3682

#XL - S Microbiology

A mutated strain of E. coli replicates DNA normally at 25°C, but replication stops immediately when the temperature is raised to 37°C. Which protein is likely to be non-functional at the higher temperature?
TLS Online TPP Program

#Question id: 8922

#XL - R Botany

Which statement is most consistent with the hypothesis that the Cambrian explosion was caused by the rise of predator-prey relationships?