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TLS Online TPP Program

#Question id: 27482

Which of the following is holds true for the D-Ribose (Rib), D-Arabinose (Ara), D-Xylose (Xyl), D-Lyxose (Lyx)

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. They all have one  chiral centre and can show maximum eight stereoisomers

  2. They all have two chiral centre and can show maximum eight stereoisomers

  3. They all have three chiral centre and can show maximum eight stereoisomers

  4. They all have four chiral centre and can show maximum eight stereoisomers

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TLS Online TPP Program

#Question id: 347

#Unit 1. Molecules and their Interaction Relevant to Biology

A beaker contains 100 milliliters (mL) of NaOH solution at pH = 13. A technician carefully pours into the beaker 10 mL of HCl at pH = 1. Which of the following statements correctly describes the result of this mixing?
TLS Online TPP Program

#Question id: 5814

#Unit 8. Inheritance Biology

A bacterial cell experiences a mutation as a result of exposure to nitrogen mustard and then divides several times to produce a total of eight cells. How many of the resulting cells would you expect to contain the mutation?
TLS Online TPP Program

#Question id: 23149

#Unit 13. Methods in Biology

In fluorescence microscopy a usually used fluorochrome that is fura-2 is sensitive to which ions?
TLS Online TPP Program

#Question id: 336

#Unit 1. Molecules and their Interaction Relevant to Biology

Which would you expect to be most soluble in water?
TLS Online TPP Program

#Question id: 23652

#General Aptitude

If the first and the second digits in the number 57124893 were interchanged, similarly the third and the fourth, and the fifth and the sixth and so on, which digit will be the fourth counting to your left?