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TLS Online TPP Program

#Question id: 71

Which of the following is not the priority rule for R, S Configuration?

#Section C (Domain-Specific Knowledge)

  1. If the four atoms attached to the chiral center are all different, priority depends on atomic number, with the atom of lower atomic number getting lower priority.

  2. If the two atoms attached to chiral centers are same, the atoms attached to each of these first atoms are compared

  3. When there is a double bond or triple bond, both atoms are considered to be duplicated or triplicated

  4. If the four atoms attached to the chiral center are all different, priority depends on atomic number, with the atom of higher atomic number getting lower priority.

More Questions
TLS Online TPP Program

#Question id: 51

#Section C (Domain-Specific Knowledge)

 If the equilibrium constant, Keq, for the reaction ATP → ADP + Pi is 2.22 × 105 M, calculate the standard free-energy change, ΔG°, for the synthesis of ATP from ADP and Pi at 25 °C.
TLS Online TPP Program

#Question id: 52

#Section C (Domain-Specific Knowledge)

Choose the incorrect option regarding Isomerism.
TLS Online TPP Program

#Question id: 53

#Section C (Domain-Specific Knowledge)

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: 54

#Section C (Domain-Specific Knowledge)

About 25 of the 92 natural elements are known to be essential to life. Which 4 of these 25 elements make up approximately 96% of living matter?
TLS Online TPP Program

#Question id: 55

#Section C (Domain-Specific Knowledge)

The standard free energy change for the reaction A → B is −15.0 kJ · mol−1. What is the equilibrium constant for the reaction at 25°C?
TLS Online TPP Program

#Question id: 56

#Section C (Domain-Specific Knowledge)

Trace elements are those required by an organism in only minute quantities. Which of the following is a trace element that is required by humans and other vertebrates, but not by other organisms such as bacteria or plants?