Bioenergetics MCQ

Test your knowledge with important Bioenergetics MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30+ more Bioenergetics MCQs on Bissoy. Bissoy App

• What is reduction potential?
  ক

  The molecule loses an electron

  খ

  An atom/molecule gains an electron

  গ

  Reducing the power of an electron

  ঘ

  Oxidation power of an electron
• What is the name of the molecule which donates its electrons?
  ক

  Reducing agent

  খ

  Oxidative agent

  গ

  Standard reduction potential

  ঘ

  Oxidant
• Which of the following act as a storage form of high energy phosphate?
  ক

  Glucose-6-phosphate

  খ

  Phosphoenolpyruvate

  গ

  Phosphagens

  ঘ

  Glycerol phosphate
• What is the standard free energy change of ATP?
  ক

  Small and negative

  খ

  Large and positive

  গ

  Large and negative

  ঘ

  Small and positive
• Which of the following equation gives the relationship between ∆G֯ and Keq?
  ক

  ∆G֯ = -RT ln Keq

  খ

  ∆G֯ = ln Keq

  গ

  ∆G = ∆G֯ (-RT Keq)

  ঘ

  ∆G = -RT ln Keq
• Which of the following factor is not responsible for the actual change in free energy (∆G)?
  ক

  Temperature

  খ

  Pressure

  গ

  The initial concentration of reactant and products

  ঘ

  pH
• What is the value of ∆G, when a system is in equilibrium?
  ক

  ∆G = 0

  খ

  ∆G = 1

  গ

  ∆G = -1

  ঘ

  ∆G = ∆G֯
• Which of the following equation shows the relationship between free energy change (∆G) and the change in entropy (∆S), under constant temperature and pressure?
  ক

  ∆G = T∆H – ∆S

  খ

  ∆G = T∆H/∆S

  গ

  ∆G = ∆H/T∆S

  ঘ

  ∆G = ∆H – T∆S
• Gibb’s free energy is the portion of the total energy which is available for useful work.
  ক

  True

  খ

  False
• Law of thermodynamics which states that energy can neither be created nor be destroyed is ___________
  ক

  The second law of thermodynamics

  খ

  Third law of thermodynamics

  গ

  First law of thermodynamics

  ঘ

  Zero-order kinetics
• What is the process of synthesis of glucose by the liver is referred to as?
  ক

  gluconeogenesis

  খ

  neogenesis

  গ

  glycolysis

  ঘ

  saccharification
• Feedback inhibition is cell’s mechanism to _____________ the process of anabolism.
  ক

  activate

  খ

  inhibit

  গ

  increase

  ঘ

  decrease
• Allosteric site is same as enzyme’s active site.
  ক

  True

  খ

  False
• Induced fit in an enzyme refers to ____________________
  ক

  error

  খ

  loop

  গ

  conformational change

  ঘ

  torsional change
• Chymotrypsin is a ___________
  ক

  starch

  খ

  polymer

  গ

  buffer

  ঘ

  enzyme
• What will happen if heat is applied to an enzyme mediated reaction?
  ক

  Rate will increase

  খ

  pH will increase

  গ

  pH will decrease

  ঘ

  Denaturation of enzyme
• Enzymes have no effect on which of the following, in a chemical reaction?
  ক

  activation energy

  খ

  speed

  গ

  thermodynamics

  ঘ

  completion time
• The non-protein constituents of conjugated proteins are called ___________
  ক

  enzymes

  খ

  cofactors

  গ

  amino acids

  ঘ

  nucleosides
• Protein catalysts are called __________ and RNA catalysts are called _____________
  ক

  enzymes, ribozymes

  খ

  ribozymes, enzymes

  গ

  enzymes, ribosomes

  ঘ

  ribosomes, enzymes
• Which of the following are responsible virtually for every reaction that takes place inside a cell?
  ক

  Carbohydrates

  খ

  ADP

  গ

  Nucleic acids

  ঘ

  Enzymes
• Cellular metabolism is a non-equilibrium metabolism.
  ক

  True

  খ

  False
• Hydrolysis of ATP is which type of reaction?
  ক

  Physical

  খ

  Mechanical

  গ

  Endergonic

  ঘ

  Exergonic
• Exergonic processes are thermodynamically unfavorable.
  ক

  True

  খ

  False
• According to laws of thermodynamics, the energy of the Universe is _________ whereas the entropy ______________
  ক

  constant, increases

  খ

  constant, decreases

  গ

  increases, remains constant

  ঘ

  decreases, remains constant
• Reactions that lose heat are termed as _____________
  ক

  endothermic

  খ

  exothermic

  গ

  chemical

  ঘ

  physical