TLS Online TPP Program

#Question id: 5555


The formation of the fertilization envelope requires an increase in the cytosolic concentration of ________.

#SCPH06 I Botany
  1. calcium ions

  2. hydrogen ions

  3. potassium ions

  4. sodium ions

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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?