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TLS Online TPP Program

#Question id: 27498

If sucrose is hydrolysed with invertase the net equilibrium mixture will have optical rotation at 200 (use the data mention in fig.)

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. +33.30 which is dextrorotatory  
  2. -33.30 which is laevorotatory 
  3. -39.30 which is laevorotatory 
  4. +39.30 which is dextrorotatory
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TLS Online TPP Program

#Question id: 53

#Unit 1. Molecules and their Interaction Relevant to Biology

Calculate the number of times the DNA of a modern E. coli cell has been copied accurately since its earliest bacterial precursor cell arose about 3.5 billion years ago. Assume for simplicity that over this time period, E. coli has undergone, on average, one cell division every 12 hours (this is an overestimate for modern bacteria, but probably an underestimate for ancient bacteria).
TLS Online TPP Program

#Question id: 23696

#Unit 13. Methods in Biology

which of the following best describes the complete sequence of steps occurring during every cycle of PCR?
1. The primers hybridize to the target DNA.
2. The mixture is heated to a high temperature to denature the double stranded target DNA.
3. Fresh DNA polymerase is added.
4. DNA polymerase extends the primers to make a copy of the target DNA.
TLS Online TPP Program

#Question id: 4123

#Unit 3. Fundamental Processes

A certain bacterial mRNA is known to represent only one gene and to contain about 800 nucleotides.  If you assume that the average amino acid residue contributes 110 to the peptide molecular weight, the largest polypeptide that this mRNA could code for would have a molecular weight of about:
TLS Online TPP Program

#Question id: 2493

#Unit 2. Cellular Organization

Which of the following is NOT true about cilia?
TLS Online TPP Program

#Question id: 3898

#Unit 3. Fundamental Processes

Which one of the following classes is expressed in the unfertilized egg and is involved in directing the spatial organization of the Drosophila embryo early in development?