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TLS Online TPP Program

#Question id: 32513

What would you conclude about the mechanism of ATP synthesis:

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. The reaction proceeds by nucleophilic substitution via the SN2 mechanism.
  2. The reaction proceeds by nucleophilic substitution via the SN1 mechanism.
  3. The reaction proceeds by electrophilic substitution via the E1 mechanism.
  4. The reaction proceeds by electrophilic substitution via the E2 mechanism.
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TLS Online TPP Program

#Question id: 1978

#Unit 4. Cell Communication and Cell Signaling

In which of the following situations will helper T cells be activated?
TLS Online TPP Program

#Question id: 18886

#Unit 13. Methods in Biology

What type of microscopy allows for the visualization of internal components within live, unstained specimens?
TLS Online TPP Program

#Question id: 7522

#General Aptitude

A worker may claim Rs 15 each km which he travels by taxi and Rs 5 for each km which he drives his own car. If in one week he claimed Rs 500 for travelling 80 km, how many km did he travel by taxi?
TLS Online TPP Program

#Question id: 7091

#Unit 5. Developmental Biology

The development of the antero-posterior axis of Drosophila is initiated when:
TLS Online TPP Program

#Question id: 31027

#Unit 4. Cell Communication and Cell Signaling

Which of the following is a type of local signaling in which a cell secretes a signal molecule that affects neighboring cells?