Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 58341
TLS Online TPP Program

#Question id: 27069

Choose the correct option regarding the stereochemistry of given compound 

#Bioorganic Chemistry and Metabolites
  1. a is L-threonine is (2S, 3R) threonine, while b is D-threonine is (2R,3S) threonine
  2. a is L-threonine is (2S, 3R) threonine, while b is D-threonine is (2R,3S) threonine
  3. a is L-allothreonine is (2S,3S) threonine, while b is D-allothreonine is (2R,3R) threonine
  4. a is D-allothreonine is (2S,3S) threonine, while b is L-allothreonine is (2R,3R) threonine
More Questions
TLS Online TPP Program

#Question id: 34

#Bioorganic Chemistry and Metabolites

Which of the following is true of any (S)-enantiomer?
TLS Online TPP Program

#Question id: 64

#Bioorganic Chemistry and Metabolites

Testosterone and estradiol are male and female sex hormones, respectively, in many vertebrates. In what way(s) do these molecules differ from each other? Testosterone and estradiol ________.
TLS Online TPP Program

#Question id: 11186

#Bioorganic Chemistry and Metabolites

Refer to the following graph of an action potential to answer the question. The membrane potential is closest to the equilibrium potential for potassium at label ________.
TLS Online TPP Program

#Question id: 56

#Introduction to Biochemistry

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?
TLS Online TPP Program

#Question id: 27068

#Bioorganic Chemistry and Metabolites

Isoleucine and Threonine have two chiral carbons so exists in multiple RS configuration, choose the correct option regarding the given fig.
1. a is D-threonine is (2S, 3S) threonine
2. b is L-threonine is (2R,3S) threonine
3. a is L-threonine is (2S, 3R) threonine
4. b is D-threonine is (2R,3S) threonine