TLS Online TPP Program

#Question id: 40507


The Miller–Urey experiment demonstrated:

#Environmental Science
  1. Cellular respiration
  2.  Abiotic synthesis of organic compounds
  3.  Evolution of prokaryotes
  4. Formation of ozone layer
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TLS Online TPP Program

#Question id: 40194

#Applied Microbiology

Assertion (A): Thermophiles can survive and reproduce at temperatures above 45°C.

Reason (R): Their enzymes and proteins contain more hydrogen bonds and salt bridges, making them heat stable.

TLS Online TPP Program

#Question id: 40195

#Environmental Science

Match List I (Environmental Conventions) with List II (Primary Focus):

List I (Convention)List II (Focus)
A. Minamata ConventionI. Control of Transboundary Movements of Hazardous Wastes
B. Basel ConventionII. Protection of Ozone Layer
C. Vienna ConventionIII. Mercury Pollution
D. Nagoya ProtocolIV. Access and Benefit Sharing (Genetic Resources)

TLS Online TPP Program

#Question id: 40196

#Applied Microbiology

In a continuous culture system (Chemostat), what happens if the dilution rate (D) exceeds the maximum specific growth rate (mumax) of the organism?

TLS Online TPP Program

#Question id: 40197

#Applied Microbiology

Assertion (A): A turbidostat is most effective when operating at high dilution rates near the maximum specific growth rate (mumax}).

Reason (R): At low dilution rates, the chemostat is more stable because the concentration of the limiting nutrient is easier to control than turbidity

TLS Online TPP Program

#Question id: 40198

#Applied Microbiology

Read the following statements regarding Fed-Batch culture and choose the correct option.

Statement I: Fed-batch culture is ideal for producing secondary metabolites (like antibiotics) because it allows the culture to be maintained in the stationary phase for a prolonged period.

Statement II: In fed-batch culture, the volume of the culture broth remains constant throughout the fermentation process. 

TLS Online TPP Program

#Question id: 40199

#Applied Microbiology

Match the parameter in Column A with its formula or definition in Column B

Column A (Parameter)Column B (Definition/Formula)
1. Dilution Rate (D)A. ln (2) / mu
2. Doubling Time (td)B. Flow rate (F) / Volume (V)
3. Yield Coefficient (Y)C. Change in cell mass / Change in substrate consumed
4. Specific Growth Rate (mu)D. 1/x . dx/dt