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TLS Online TPP Program

#Question id: 604

An enzyme is irreversibly inhibited by diisopropylfluorophosphate (DFP). What does this show?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. The enzyme has been denatured by DFP.

  2. Serine is likely an important residue in the active site.

  3. DFP is an allosteric modulator of the enzyme.

  4. DFP is an analog of the enzymeʹs substrate.

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TLS Online TPP Program

#Question id: 5946

#General Aptitude

Today is Sunday. After 61 days it was?
TLS Online TPP Program

#Question id: 12658

#Unit 7. System Physiology – Animal

In a person on a high (200 mmol/day) potassium diet, which part of the nephron would be expected to secrete the most potassium?
TLS Online TPP Program

#Question id: 2061

#Unit 2. Cellular Organization

Which of the following types of molecules are hydrophilic and therefore excluded from the hydrophobic portion of the phospholipid bilayer?
TLS Online TPP Program

#Question id: 8937

#Unit 9. Diversity of Life Forms

During metamorphosis, echinoderms undergo a transformation from motile larvae to a sedentary (or sometimes sessile) existence as adults. What differentiates echinoderm adults, but not their larvae? Adults should
TLS Online TPP Program

#Question id: 4130

#Unit 3. Fundamental Processes

Which of the following is not true of tRNA molecules?