TLS Online TPP Program

#Question id: 10202


What will happen if C4 leaves are exposed to low O2 concentrations?

#Unit 6. System Physiology – Plant
  1. photorespiration is minimized
  2. The quantum yields for CO2 fixation remain constant at about 0.05 to 0.6 mole of CO2 per mole of photons
  3. The carbon-concentrating mechanism in C4 photosynthesis Accept all CO2 via photorespiration

  4. maximum quantum yield increases to about 0.09 mole of CO2 per mole of photons 
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TLS Online TPP Program

#Question id: 616

#Unit 1. Molecules and their Interaction Relevant to Biology

Which equilibrium below applies to noncompetitive inhibition?

TLS Online TPP Program

#Question id: 617

#Unit 1. Molecules and their Interaction Relevant to Biology

Compare the two reaction coordinate diagrams below and select the answer that correctly describes their relationship.  In each case, the single intermediate is the ES complex.

TLS Online TPP Program

#Question id: 618

#Unit 1. Molecules and their Interaction Relevant to Biology

 In the following diagram of the first step in the reaction catalyzed by the protease chymotrypsin, the process of general base catalysis is illustrated by the number ________, and the process of covalent catalysis is illustrated by the number _________.

TLS Online TPP Program

#Question id: 619

#Unit 1. Molecules and their Interaction Relevant to Biology

The benefit of measuring the initial rate of a reaction V0 is that at the beginning of a reaction:

TLS Online TPP Program

#Question id: 620

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statements about a plot of V0 vs. [S] for an enzyme that follows Michaelis-Menten kinetics is false?

TLS Online TPP Program

#Question id: 621

#Unit 1. Molecules and their Interaction Relevant to Biology

Michaelis and Menten assumed that the overall reaction for an enzyme-catalyzed reaction could be written as Using this reaction, the rate of breakdown of the enzyme-substrate complex can be described by the expression: