TLS Online TPP Program

#Question id: 4148


Which of the following is true about the sorting pathway for proteins destined for incorporation into lysosomes or the plasma membrane of eukaryotic cells?

#SCPH28 | Zoology
  1. Binding of SRP to the signal peptide and the ribosome temporarily accelerates protein synthesis.

  2. The newly synthesized polypeptides include a signal peptide at their carboxyl termini.

  3. The signal peptide is cleaved off inside the mitochondria by signal peptidase.

  4. The signal recognition particle (SRP) binds to the signal peptide soon after it appears outside the ribosome.

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TLS Online TPP Program

#Question id: 561

#I Life Science/ Life Sciences Group – I-V

Enzyme X exhibits maximum activity at pH = 6.9.  X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4.  One likely interpretation of this pH activity is that:

TLS Online TPP Program

#Question id: 561

#SCPH05 I Biotechnology

Enzyme X exhibits maximum activity at pH = 6.9.  X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4.  One likely interpretation of this pH activity is that:

TLS Online TPP Program

#Question id: 561

#SCPH06 I Botany

Enzyme X exhibits maximum activity at pH = 6.9.  X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4.  One likely interpretation of this pH activity is that:

TLS Online TPP Program

#Question id: 561

#SCPH28 | Zoology

Enzyme X exhibits maximum activity at pH = 6.9.  X shows a fairly sharp decrease in its activity when the pH goes much lower than 6.4.  One likely interpretation of this pH activity is that:

TLS Online TPP Program

#Question id: 562

#SCPH01 Biochemistry

Phenyl-methane-sulfonyl-fluoride (PMSF) inactivates serine proteases by binding covalently to the catalytic serine residue at the active site; this enzyme-inhibitor bond is not cleaved by the enzyme.  This is an example of what kind of inhibition?

TLS Online TPP Program

#Question id: 562

#I Life Science/ Life Sciences Group – I-V

Phenyl-methane-sulfonyl-fluoride (PMSF) inactivates serine proteases by binding covalently to the catalytic serine residue at the active site; this enzyme-inhibitor bond is not cleaved by the enzyme.  This is an example of what kind of inhibition?