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TLS Online TPP Program

#Question id: 4133

Which of the following statements about aminoacyl-tRNA synthetases is false?

#Section 3: Genetics, Cellular and Molecular Biology

  1. Some of the enzymes have an editing/proofreading capability.

  2. The enzyme attaches an amino acid to the 3' end of a tRNA.

  3. The enzyme splits ATP to AMP + PPi.

  4. The enzyme will use any tRNA species, but is highly specific for a given amino acid.

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TLS Online TPP Program

#Question id: 16569

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Eukaryotic mRNA extraction, can be done by using which of the following columns in affinity chromatography 
TLS Online TPP Program

#Question id: 3346

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is NOT an assumption of the Hardy- Weinberg model?
TLS Online TPP Program

#Question id: 4730

#Section 3: Genetics, Cellular and Molecular Biology

Cross is made between a pure breeding plant having red coloured male flowers with a pure breeding plant having white colored female flowers. All of these offspring are white colored flower. Upon selfing of these F1 red flower plant produced both red and white flower. Which of the following is conclusion of these cross?
TLS Online TPP Program

#Question id: 3298

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is incorrect statement?
TLS Online TPP Program

#Question id: 626

#Section 2: General Biology

A metabolic pathway proceeds according to the scheme, R -> S -> T -> U -> V -> W.  A regulatory enzyme, X, catalyzes the first reaction in the pathway.  Which of the following is most likely correct for this pathway?