Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 61886
TLS Online TPP Program

#Question id: 37852

Why do callus cultures need to be subcultured every 3–5 weeks?

#Plant Biotechnology
  1. To induce differentiation
  2. To prevent contamination
  3. To replenish nutrients and prevent medium drying
  4. To change the pH of the medium
More Questions
TLS Online TPP Program

#Question id: 128

#Life Sciences

Amino acids with non-ionizable side chains are zwitterions when they are ________.
TLS Online TPP Program

#Question id: 129

#Life Sciences

Glycine is not a stereoisomer because
TLS Online TPP Program

#Question id: 130

#Life Sciences

An amino acid with two chiral carbon atoms
TLS Online TPP Program

#Question id: 131

#Life Sciences

The RS system of nomenclature describes
TLS Online TPP Program

#Question id: 132

#Life Sciences

Proline is distinct among the 20 commonly found amino acids because
TLS Online TPP Program

#Question id: 133

#Life Sciences

Tyrosine and tryptophan are less hydrophobic than phenylalanine because