8 Microbial Physiology Module 8: Bioenergetics and E- Transport

All of the following are high energy molecules except:

• Adenosine triphosphate

• Nicotinamide adenine dinucleotide

• Phosphoenolpyruvate

• All of the aforementioned.

• None of the aforementioned

A negative Gibbs free energy value denotes:

• Reaction is endergonic

• Reaction requires energy to proceed

• Reaction does not require energy to proceed

• Reaction proceeds with the release of free energy

All of the following is FALSE except:

• Oxidation is the addition of electrons

• Redox reaction is an oxidation reaction paired with reduction reaction

• Oxidation requires oxygen molecules in the reaction

• None of the aforementioned.

Of the following compounds, which will release the highest free energy upon group transfer:

• Glucose-6-phosphate

• ATP

• Acetyl-phosphate

• Phosphoenolpyruvate

• None of the aforementioned.

Which of the following is/are FALSE:

• Enzymes are catalysts that lower the activation energy of a reaction

• Enzymes affect the energetics or the equilibrium of a reaction

• Enzymes affect only the rate at which reactions proceed

• Enzymes are not consumed or transformed by reactions

• None of the aforementioned.

Which of the following molecules donates electron most readily?

• Oxygen

• Cytochrome

• Ubiquinone

• NADH

• None of the aforementioned.

The following major roles are played by adenosine triphosphate except:

• As an energy source

• ATP can be used to form amide linkages

• ATP can be used to form peptide bonds

• ATP can be used to form ester bonds

• None of the aforementioned.

ATP synthesis can happen through the following pathways EXCEPT:

• Oxidative phosphorylation

• Substrate-level phosphorylation

• Photophosphorylation

• Respiratory Chain

• None of the aforementioned.

The following statements are TRUE about Electron Transport Chain (ETC) except:

• ETC involves transfer of electrons from the primary electron donor.

• Mainly occurs in the membrane

• Involves series of electron carriers

• Coupled with electrochemical proton gradient generation

• None of the above

Respiratory activity can occur in all of the following condition except in:

• Aerobic condition

• Microaerophilic condition

• Anaerobic condition

• B and C

• None of the aforementioned.