MCQs on Mitochondria Questions and Answers

MCQs on Mitochondria Questions and Answers

Mitochondria, A Cell Organelle – Definition


Mitochondria is a cell organelle commonly called power house of the cell. They provide energy transuding system. This system is used to change the food into chemical energy by oxidative phosphorylation.

Course Content:

  • Introduction
  • Structure of mitochondria
  • Mitochondrial matrix
  • Mitochondrial crest
  • Enzymes of mitochondria
  • Functions of mitochondria

All of these Zoology MCQs are preferably for test / interview preparation for BSc, MSc, BS (Hons), NTS, FPSC, PPSC, PTS, CSS and all other competitive examination for foreign study including overseas students.

Read More: MCQs on Lysosomes Multiple Choice Questions With Key


Mitochondria, A Cell Organelle MCQs (Questions and Answers)


Q1. Which cell component is known as power house of the cell?

  1. Golgi apparatus
  2. Mitochondria
  3. Vacuole
  4. Ribosomes

Answer: b

Q2. By which system, mitochondria change the food into chemical energy?

  1. Oxidation
  2. Reduction
  3. Detoxification
  4. Oxidative phosphorylation

Answer: d

Q3. Which energy is synthesized during oxidative phosphorylation?

  1. ATP
  2. ADP
  3. AMP
  4. None

Answer:  a

Q4. Which cell organelle is found in rod shaped in the cell of eukaryotes?

  1. Cytoplasm
  2. Cell membrane
  3. Vacuole
  4. Mitochondria

Answer: d

Q5. The diameter of mitochondria is about:

  1. 0.2 µm
  2. 0.3 µm
  3. 0.5 µm
  4. 0.1 µm

Answer: c

Q6. The mitochondria contain two membranes.    True/false

Answer: True

Q7. How many mitochondria are found in liver cells?

  1. 1000 to 1600
  2. 1000 to 1100
  3. 1000 to 1300
  4. 1000 to 1500

Answer: a

Q8. The two mitochondrial membranes are being separated by:

  1. 6 to 7nm
  2. 5 to 8nm
  3. 8 to 9nm
  4. 9 to 10nm

Answer: c

Q9. What is the composition of unit membrane structures of the two mitochondrial membranes?

  1. Lipid molecules
  2. Protein molecules
  3. Cholesterol molecules
  4. Both a and b

Answer: d

Q10. The inner compartment of mitochondrial membranes is filled with__________.

  1. fluid
  2. mitochondrial matrix
  3. mitochondrial crest
  4. all of the above

Answer: b

Q11. The outer compartment of mitochondrial membranes is present between the inner and outer membrane.      True/False

Answer: True

Q12. The mitochondrial matrix is generally consists of:

  1. phospholipids
  2. circular DNA
  3. ribosomes
  4. all of the above

Answer: d

Q13. The mitochondrial matrix contains complex in-folding. What are these in-folding called?

  1. Mitochondrial crests or cristae
  2. Mitochondrial tubules
  3. Mitochondrial network
  4. Mitochondrial framework

Answer: a

Q14. The dense granules of mitochondrial crest contains phospholipids.     True/False

Answer: False(mitochondrial matrix)

Q15. The mitochondrial matrix is generally homogenous fluid.       True/False

Answer: True

Q16. Which membrane of mitochondria contains numerous small F1 particles?

  1. Outer membrane
  2. Inner membrane
  3. Both
  4. None

Answer: b

Q17. The mitochondrial matrix is incomplete septa or ridges.        True/False

Answer: False(mitochondrial crest)

Q18. What is the diameter of F1 particles of the inner membrane of mitochondria?

  1. 6.5nm
  2. 7.5nm
  3. 8.5nm
  4. 9.5nm

Answer: c

Q19. The F1 particles of the inner membrane of mitochondria contain special ATPase complex and proton pump.              True/False

Answer: True 

Q20. What are the enzymes of outer membrane of mitochondria?

  1. Monoamine oxidase
  2. NADH-Cytochrome reductase
  3. Fatty acid CoA ligase
  4. All of the above

Answer: d

Q21. Nucleoside di-phosphokinase is the enzyme of the space between outer and inner membrane of mitochondria..      True/False

Answer: True

Q22. What are the enzymes of the inner membrane of mitochondria?

  1. Respiratory chain enzyme
  2. ATP synthase
  3. Monoamine oxidase
  4. Both a and b

Answer: d

Q23. What are the enzymes of mitochondrial matrix?

  1. Malate dehydrogenase
  2. Citrate synthase
  3. a-keto acid dehydrogenase
  4. All of the above

Answer: d

Q24. Where the Krebs’s cycle takes place in mitochondria?

  1. Mitochondrial crest
  2. Mitochondrial matrix
  3. Inner membrane of mitochondria
  4. Outer membrane of mitochondria

Answer: b

Q25. Which processes take place in the inner membrane of mitochondria by oxidative phosphorylation?

  1. Electron transport chain
  2. ATP synthesis
  3. Krebs’s cycle
  4. Both a and b

Answer: d

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