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TLS Online TPP Program

#Question id: 648

Enzyme catalysis is regulated by a number of mechanisms. Also, the flux through metabolic pathways must be regulated. Given the metabolic pathway below, which choice accurately describes the regulation of compound G levels?

#Section 2: General Biology

  1. G is regulated by chemical modification of the enzyme that catalyzes step 3.

  2. G serves as an inhibitory effector of the allosteric enzyme that catalyzes step 3.

  3. G inhibits the expression of the enzyme that catalyzes the formation of D.

  4. The reversible reaction of B to D is converted to an irreversible reaction.

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TLS Online TPP Program

#Question id: 14561

#Section 2: General Biology

During which phase of growth are bacteria most susceptible to antibiotics?
TLS Online TPP Program

#Question id: 14562

#Section 2: General Biology

Which of the following stains is/are considered differential?
TLS Online TPP Program

#Question id: 14563

#Section 2: General Biology

During which phase of the bacterial growth curve does the total number of viable cells decline?
TLS Online TPP Program

#Question id: 14564

#Section 2: General Biology

The lag phase of the bacterial growth curve is marked by
TLS Online TPP Program

#Question id: 14565

#Section 2: General Biology

The Gram stain and the endospore stain both use
TLS Online TPP Program

#Question id: 14566

#Section 2: General Biology

A pure culture in exponential growth phase has a bacterial concentration of 6.4 x 108 cells/ml. If the bacterium has a generation time of 1 h, how long ago was the cell
concentration 8.0 x 107 cells/ml?