MCQOPTIONS
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MCQOPTIONS
This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Biochemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the relationship between ∆G and ∆G‘°? |
| A. | ∆G = ∆G‘° + RTln([products]/[reactants]) |
| B. | ∆G = ∆G‘° – RTln([products]/[reactants]) |
| C. | ∆G = ∆G‘° + RTln([reactants]/[products]) |
| D. | ∆G = ∆G‘° – RTln([reactants]/[products]) |
| Answer» B. ∆G = ∆G‘° – RTln([products]/[reactants]) | |
| 2. |
If ∆G‘° of the reaction A → B is -40kJ/mol under standard conditions then the reaction ____________ |
| A. | Will never reach equilibrium |
| B. | Will not occur spontaneously |
| C. | Will proceed at a rapid rate |
| D. | Will proceed from left to right spontaneously |
| Answer» E. | |
| 3. |
The relationship between K‘eq and ∆G‘° is? |
| A. | ∆G‘° = RTlnK‘eq |
| B. | ∆G‘° = -RTK‘eq |
| C. | ∆G‘° = RK‘eq |
| D. | ∆G‘° = -RK‘eq |
| Answer» C. ∆G‘° = RK‘eq | |
| 4. |
The study of energy relationships and conversions in biological systems is called as ____________ |
| A. | Biophysics |
| B. | Biotechnology |
| C. | Bioenergetics |
| D. | Microbiology |
| Answer» D. Microbiology | |
| 5. |
Unfolding of regular secondary protein structure causes ____________ |
| A. | Large decrease in the entropy of the protein |
| B. | Little increase in the entropy of protein |
| C. | No change in the entropy of the protein |
| D. | Large increase in the entropy of the protein |
| Answer» E. | |
| 6. |
For a reaction if ∆G° is positive, then ____________ |
| A. | The products will be favored |
| B. | The reactants will be favored |
| C. | The concentration of the reactants and products will be equal |
| D. | All of the reactant will be converted to products |
| Answer» C. The concentration of the reactants and products will be equal | |
| 7. |
∆G° is defined as the ____________ |
| A. | Residual energy present in the reactants at equilibrium |
| B. | Residual energy present in the products at equilibrium |
| C. | Difference in the residual energy of reactants and products at equilibrium |
| D. | Energy required in converting one mole of reactants to one mole of products |
| Answer» E. | |
| 8. |
If enthalpy change for a reaction is zero, then ∆G° equals to _____________ |
| A. | -T∆S° |
| B. | T∆S° |
| C. | -∆H° |
| D. | lnkeq |
| Answer» B. T∆S° | |
| 9. |
WHAT_IS_THE_RELATIONSHIP_BETWEEN_‚ÄÖ√Ñ√∂‚ÀւĆ‚ÀÖ√∫G_AND_‚ÄÖ√Ñ√∂‚ÀւĆ‚ÀÖ√∫G‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚Àւ§¬¨¬®‚ÄÖ√†√ª??$# |
| A. | ∆G = ∆G<sup>‘°</sup> + RTln([products]/[reactants]) |
| B. | ∆G = ∆G<sup>‘°</sup> – RTln([products]/[reactants]) |
| C. | ∆G = ∆G<sup>‘°</sup> + RTln([reactants]/[products]) |
| D. | ∆G = ∆G<sup>‘°</sup> – RTln([reactants]/[products]) |
| Answer» B. ‚Äö√Ñ√∂‚àö‚Ć‚àö√∫G = ‚Äö√Ñ√∂‚àö‚Ć‚àö√∫G<sup>‚Äö√Ñ√∂‚àö√ë‚àö‚⧬¨¬®‚Äö√†√ª</sup> ‚Äö√Ñ√∂‚àö√ë‚àö¬® RTln([products]/[reactants]) | |
| 10. |
Which of the following statements is false?$ |
| A. | The reaction tends to go in the forward direction if ∆G is large and positive |
| B. | The reaction tends to move in the backward direction if ∆G is large and negative |
| C. | The system is at equilibrium if ∆G = 0 |
| D. | The reaction tends to move in the backward direction if ∆G is large and positive |
| Answer» E. | |
| 11. |
If ∆G‘° of the reaction A → B is -40kJ/mol under standard conditions then the reactio?# |
| A. | Will never reach equilibrium |
| B. | Will not occur spontaneously |
| C. | Will proceed at a rapid rate |
| D. | Will proceed from left to right spontaneously |
| Answer» E. | |
| 12. |
What does first law of thermodynamics state? |
| A. | Energy can neither be destroyed nor created |
| B. | Energy cannot be 100 percent efficiently transformed from one type to another |
| C. | All living organisms are composed of cells |
| D. | Input of heat energy increases the rate of movement of atoms and molecules |
| Answer» B. Energy cannot be 100 percent efficiently transformed from one type to another | |
| 13. |
The relationship between K‘eq and ∆G‘° is$ |
| A. | ∆G<sup>‘°</sup> = RTlnK<sup>‘</sup><sub>eq</sub> |
| B. | ∆G<sup>‘°</sup> = -RTK<sup>‘</sup><sub>eq</sub> |
| C. | ∆G<sup>‘°</sup> = RK<sup>‘</sup><sub>eq</sub> |
| D. | ∆G<sup>‘°</sup> = -RK<sup>‘</sup><sub>eq</sub> |
| Answer» C. ‚Äö√Ñ√∂‚àö‚Ć‚àö√∫G<sup>‚Äö√Ñ√∂‚àö√ë‚àö‚⧬¨¬®‚Äö√†√ª</sup> = RK<sup>‚Äö√Ñ√∂‚àö√ë‚àö‚â§</sup><sub>eq</sub> | |
| 14. |
The study of energy relationships and conversions in biological systems is called as |
| A. | Biophysics |
| B. | Biotechnology |
| C. | Bioenergetics |
| D. | Microbiology |
| Answer» D. Microbiology | |
| 15. |
Unfolding of regular secondary protein structure causes |
| A. | Large decrease in the entropy of the protein |
| B. | Little increase in the entropy of protein |
| C. | No change in the entropy of the protein |
| D. | Large increase in the entropy of the protein |
| Answer» E. | |
| 16. |
For a reaction if ∆G° is positive, then$ |
| A. | The products will be favored |
| B. | The reactants will be favored |
| C. | The concentration of the reactants and products will be equal |
| D. | All of the reactant will be converted to products |
| Answer» C. The concentration of the reactants and products will be equal | |
| 17. |
∆G° is defined as the$ |
| A. | Residual energy present in the reactants at equilibrium |
| B. | Residual energy present in the products at equilibrium |
| C. | Difference in the residual energy of reactants and products at equilibrium |
| D. | Energy required in converting one mole of reactants to one mole of products |
| Answer» E. | |
| 18. |
If enthalpy change for a reaction is zero, then ∆G° equals to |
| A. | -T∆S° |
| B. | T∆S° |
| C. | -∆H° |
| D. | lnk<sub>eq</sub> |
| Answer» B. T‚Äö√Ñ√∂‚àö‚Ć‚àö√∫S¬¨¬®‚Äö√†√ª | |