Back to quiz

6. In the ETC there are a series of electron carriers. As electrons are passed along them the electrons....

  • lose energy
  • gain energy

7. What is the correct sequence of processes for aerobic respiration?

  • glycolysis > electron transport chain > link reaction > krebs cycle
  • glycolysis > link reaction > krebs cycle > electron transport chain
  • electron transport chain > krebs cycle > link reaction > glycolysis
  • glycolysis > krebs cycle > link reaction > electron transport chain

8. At the end of the ETC, the protons are finally accepted by oxygen to produce water. This makes oxygen the...

  • terminal electron acceptor
  • Terminal neutron acceptor
  • Terminal proton acceptor
  • Terminal electron rejector

9. During anaerobic respiration, pyruvate is used to make....

  • ethanol and lactate in plants and CO2 in animals
  • ethanol and CO2 in plants and Lactate in animals
  • lactate in plants and ethanol and CO2 in animals
  • ethanol in plants and CO2 and lactate in animals

10. Lactate produced by anaerobic respiration can be...

  • oxidised for aerobic respiration only
  • converted into glycogen or oxidised for aerobic respiration
  • converted into glycogen only
  • used to accept electrons in the electron transport chain

11. What is the equipment for measuring the rate of respiration called and what is it based on?

  • Respirometer, based on measuring gas volume
  • Respiro-matic, based on how fast a duck can spin on its axis
  • Respiration meter, based on measuring uptake of mass
  • Respirometer, based on measuring distance moved by an organism

12. At the start of glycolysis, glucose is activated by ...................

  • Oxidation (gain of oxygen)
  • phosphorylation (bonded to 1 phosphate molecule)
  • phosphorylation (bonded to 2 phosphate molecules)
  • Reduction (gain of Hydrogen atoms)

13. Which of these processes happens in all living cells?

  • the krebs cycle
  • glycolysis
  • phtosynthesis
  • the link reaction

14. Methylene blue is a chemical that models how co-enzymes work by 1............ hydrogen ions, 2.......... it changing the colour 3...............

  • 1donating 2oxidizing 3from blue to colourless
  • 1accepting 2 reducing it 3from blue to colourless
  • 1accepting 2oxidizing 3from blue to colourless
  • 1donating 2reducing 3from colourless to blue

15. The Krebs cycle is aided by which co-enzymes to catalyse the removal of hydrogen ions?

  • FAD only
  • NAD and RAD
  • FAD and NAD
  • NAD only

16. What are the end products of glycolysis?

  • triose phospate, ADP and Pi, NADP
  • triose phospate, ATP, NADPH
  • pyruvate, ATP, NADPH
  • pyruvate, ADP and Pi, NADP

17. In the electron transport chain, energy from electrons is used to....

  • enable O2 to take up electrons
  • enable O2 to take up CO2 to form glucose
  • pump H+ from the matrix into the inner membrane space
  • pump H+ from the inner membrane space into the matrix