TLS Online TPP Program

#Question id: 5570


Sexual reproduction ________.

#XL - T Zoology
  1. results in over half of the offspring being female

  2. produces offspring of greater genetic variety compared to offspring resulting from asexual reproduction

  3. is completed more rapidly than asexual reproduction

  4. is better suited to environments with relatively constant conditions

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TLS Online TPP Program

#Question id: 34203

#XL - S Microbiology

For a bacterial species, the following parameters are known:
μmax=0.9 h−1
Ks=0.1 g/L
Substrate concentration S=0.1 g/L 
Calculate the specific growth rate μ.

TLS Online TPP Program

#Question id: 34204

#XL - S Microbiology

A bacterium has a 𝜇max​  of 1.2 h⁻¹ and exhibits a specific growth rate (𝜇) of 0.8 h⁻¹ when the substrate concentration 𝑆 is 0.4 g/L. Calculate the value of 𝐾𝑠​ .

TLS Online TPP Program

#Question id: 34205

#XL - S Microbiology

A continuous culture is maintained under steady-state conditions in a chemostat where the dilution rate equals the specific growth rate. If the maximum specific growth rate (μmax) of the organism is 0.8 h-1 and the substrate concentration at which the organism grows at this rate is 1.6 g/L, determine the substrate concentration (in g/L) at which the specific growth rate becomes 0.4 h-1. Assume Monod kinetics apply and Ks=0.4 g/L.

TLS Online TPP Program

#Question id: 34206

#XL - S Microbiology

In a chemostat experiment, a microbial species with 𝜇max=1.0 h−1  and 𝐾𝑠=0.2 g/L is maintained at steady-state. If the dilution rate is set to 0.5 h-1, calculate the substrate concentration (S) in the reactor (in g/L), assuming Monod growth.

TLS Online TPP Program

#Question id: 34325

#XL - S Microbiology

Which of the following statements regarding moist heat sterilization are correct?

TLS Online TPP Program

#Question id: 34326

#XL - S Microbiology

Which of the following chemical agents act by disrupting microbial membranes?