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TLS Online TPP Program

#Question id: 11440

Arginine contains a guanidinium R-group and has pK1,pk2 pkR values of 2.17, 9.04, and 12.48 For arginine molecules at pH=14,

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. all the ionizable groups will be charged.

  2. guanidinium group of arginine will be charged.

  3. all the amino groups will be charged.

  4. all the carboxyl groups will be charged.
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TLS Online TPP Program

#Question id: 12749

#Unit 13. Methods in Biology

What are the constituents used for isolation of bacterial plasmid DNA, RNA and plant DNA respectively?
TLS Online TPP Program

#Question id: 12750

#Unit 13. Methods in Biology

Bacterial culture was treated with SDS and NAOH then centrifuged, supernatant was decanted and treated with potassium acetate and centrifuged to get a pellet. What is the composition of the pellet?
TLS Online TPP Program

#Question id: 12751

#Unit 13. Methods in Biology

A DNA sample has a 260/280 ratio of 2. Which of the following treatments can be used to get a better purity of DNA sample?
TLS Online TPP Program

#Question id: 12752

#Unit 13. Methods in Biology

Which of the following cannot be used to remove protein contamination from nucleic acids?
TLS Online TPP Program

#Question id: 12753

#Unit 13. Methods in Biology

Property of CTAB to precipitate plant DNA is because of presence of --------- in the DNA?
TLS Online TPP Program

#Question id: 12754

#Unit 13. Methods in Biology

A restriction enzyme cuts 1000bp away from the recognition site the restriction enzyme is most likely to be