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TLS Online TPP Program

#Question id: 124

What is the role of cholesterol in animal cell membranes?

#Section 2: General Biology

  1. Blocks the association of the fatty acyl chains of phospholipids at high temperature.

  2. Aids in the transport of small hydrophobic molecules across the membrane.

  3. Is a receptor site for hormones on the surface of membranes.

  4. Broadens the temperature range of optimum membrane fluidity.

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TLS Online TPP Program

#Question id: 1611

#Section 2: General Biology

Which of the following is NOT produced following activation of the NADPH oxidase microbicidal pathway?
TLS Online TPP Program

#Question id: 4754

#Section 3: Genetics, Cellular and Molecular Biology

Allele A is epistatic to allele B. Which of the following statement are incorrect?
TLS Online TPP Program

#Question id: 2067

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following would likely diffuse through the lipid bilayer of a plasma membrane most rapidly?
TLS Online TPP Program

#Question id: 3650

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is true for the most important form of DNA damage which produces pyrimidine dimers from adjacent pyrimidine bases?
TLS Online TPP Program

#Question id: 20044

#Section 4: Fundamentals of Biological Engineering

In a batch sterilization process if ∇overall , ∇heating & ∇cooling are 32.2, 9.8 & 10.1 respectively, THEN the holding time at 121ºC of the process is (given that the specific death rate (k) of microorganisms at 121ºC is 2.54 min-1 ):