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TLS Online TPP Program

#Question id: 11296

Which of the following statements is true?

#Unit 10. Ecological Principles
  1. Oligotrophic lakes contain more nutrients than eutrophic lakes.
  2. Xerarch succession is primary succession that occurs in salt-water environments.
  3. Most ecologists believe that most communities achieve a stable, unchanging climax vegetation.
  4. A mature ecosystem has greater species richness, greater biomass, and less net productivity than a younger stage of succession.
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TLS Online TPP Program

#Question id: 184

#Unit 1. Molecules and their Interaction Relevant to Biology

What is the approximate charge difference between glutamic acid and alpha-ketoglutarate at pH 9.5?
TLS Online TPP Program

#Question id: 185

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the amino acids with their correct functional group:

1. Indole

i. Histidine

2. Imidazole

ii. Tryptophan

3. Thiol

iii. Cysteine

4. Pyrrolidine

iv. Proline


TLS Online TPP Program

#Question id: 186

#Unit 1. Molecules and their Interaction Relevant to Biology

What will be the net charge on given peptide at pH 5?
TLS Online TPP Program

#Question id: 187

#Unit 1. Molecules and their Interaction Relevant to Biology

The pH inside cells is normally near pH 7. At pH 7 which statement is true about the charges (ionization state) of the α-Carboxyl and α-Amino groups of an amino acid?
TLS Online TPP Program

#Question id: 188

#Unit 1. Molecules and their Interaction Relevant to Biology

Active holoenzymes are formed from ________ in the presence of ________.
TLS Online TPP Program

#Question id: 189

#Unit 1. Molecules and their Interaction Relevant to Biology

Because coenzymes are specific for the chemical groups that they accept and donate, they are referred to as