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TLS Online TPP Program

#Question id: 644

Enzyme X and Enzyme Y are both involved in monosaccharide metabolism. Enzyme X uses glucose as a substrate while Enzyme Y uses fructose as a substrate. At pH=7.0, Enzyme X has a Vmax of 10 μM/s while Enzyme Y has a Vmax of 20 μM/s. Both enzymes have a Km of 3.0 mM for their respective substrates. Which aspects of its reaction will be changed by Enzyme Y?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. The activation energy of the reaction and the energy of the product

  2. The rate of the reaction and the energy of the transition state

  3. The equilibrium position of the reaction and the energy of the substrate

  4. The reversibility of the reaction and the energy of the active site

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TLS Online TPP Program

#Question id: 20993

#Unit 12. Applied Biology

Toluene decay by the denitrifying pseudomonas sp. Strain k172 is done. The enzymes involved in degradation pathway are   
1.  Benzyl alcohol dehydrogenase
2.  Benzaldehyde dehydrogenase
3.  Benzoyl-coa synthetase 
Which of the below combinations are correct?
TLS Online TPP Program

#Question id: 20987

#Unit 12. Applied Biology

Toluene degradation could be optimized and linked to the reduction of 
1. Nitrate 
2. Nitrous oxide
3. Nitrite
Which of the below combinations are correct?
TLS Online TPP Program

#Question id: 20983

#Unit 12. Applied Biology

Which is considered as less recalcitrant out of the BTEX compounds, and of lesser regulatory concern?
1. Xylene
2. Ethylbenzene
3. Toluene
4. Benzene
Which of the below combinations are correct?
TLS Online TPP Program

#Question id: 20711

#Unit 12. Applied Biology

During the electron transfer process, usable energy is recovered via a series of redox reactions through the formation of 
1. Energy storage compounds 
2. Electrochemical gradients
3. Vacoules
Which of the below combinations are correct?
TLS Online TPP Program

#Question id: 20539

#Unit 12. Applied Biology

Aromatic hydrocarbons including benzene, toluene, ethylbenzene and xylene collectively referred as BTEX compounds. Which of them are not considered as carcinogenic?
1. Benzene
2. Toluene
3. Ethylbenzene
4. Xylene
Which of them is a correct option?
TLS Online TPP Program

#Question id: 18389

#Unit 12. Applied Biology

How the degradation of alkanes and aromatic hydrocarbons generally occurs.
1. Oxygenase enzyme
2. β-oxidation to yield acetyl CoA
3. Hydrogenation reaction
4. Carboxylation
Which of the following are correct?