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#Question id: 10985


What is the membrane potential (threshold level) at which the S-A node discharges?

#SCPH28 | Zoology
  1. −40 mV
  2. −55 mV
  3. −65 mV
  4. −85 mV

Answer:- Option(s): 1


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#Question id: 754

#SCPH28 | Zoology

If the twisting of the DNA is in the same direction as that of the double helix, that is the helix is twisted up before closure, this form of super coiling is known as;

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#Question id: 3923

#SCPH28 | Zoology

The transcription of __ RNA accounts for most of the transcriptional activity of a cell.

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#Question id: 577

#I Life Science/ Life Sciences Group – I-V

Most of the known enzymes are ________.

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#Question id: 16487

#SCPH01 Biochemistry

Few limitations regarding organ culture 
It can be maintained only for a few months
Not suitable for biochemical and molecular analyses
For each study, fresh organ cultures have to be initiated
It denatures very easily
Which of the above statements are correct? 

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#Question id: 90

#SCPH28 | Zoology

Pyranose rings are usually most stable when the ring adopts a ________ conformation with the bulkiest ring substituents in ________ positions.

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