TLS Online TPP Program

#Question id: 3000


Mycoplasmas are bacteria that lack cell walls. On the basis of this structural feature, whichstatement concerning mycoplasmas should be true?

#Section 2: General Biology
  1. They are gram-negative.

  2. They are subject to lysis in hypotonic conditions.

  3. They lack a cell membrane as well.

  4. They possess typical prokaryotic flagella

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TLS Online TPP Program

#Question id: 27050

#Section 4: Fundamentals of Biological Engineering

In a process, two feed streams are there and one output stream. The feed streams have the feed rates as 500 kg/sec and 600 kg/sec. If the output stream rate is 800 kg/s, what is the mass stored in the chamber in five seconds?

TLS Online TPP Program

#Question id: 1964

#Section 2: General Biology

A bacterium entering the body through a small cut in the skin will do which of the following?

TLS Online TPP Program

#Question id: 14610

#Section 2: General Biology

Which molecules are associated with the cell wall of Gram-positive bacteria?
1. Peptidoglycan
2. L-form amino acids
3. Teichoic acids 
4. LPS
Which combination is correct?

TLS Online TPP Program

#Question id: 18966

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Select the best algorithm to do pairwise alignment when two proteins are closely related and very similar in length.

TLS Online TPP Program

#Question id: 14401

#Section 5: Bioprocess Engineering and Process Biotechnology

Denitrifying bacteria are immobilised in gel beads and used in a stirred reactor for removal of nitrate from groundwater. At a nitrate concentration of 3 g m -3, the conversion rate is 0.011 g s-1 m-3 catalyst. The effective diffusivity of nitrate in the gel is 1.5 × 10 -9 m 2 s-1, the beads are 6 mm in diameter, and the liquid-solid mass-transfer coefficient is 10 -5 m s-1. Km for the immobilised bacteria is approximately 25 g m -3. Calculate the observable Thiele modulus with CAs = 1.9 g m -3