Question

Which of the following is the correct sequence of events in cellular respiration?
a. glycolysis, citric acid cycle, electron transport chain
b. glycolysis, preparatory reaction, citric acid cycle, electron transport chain
c. glycolysis, electron transport chain, preparatory reaction
d. citric acid cycle, glycolysis, electron transport chain, preparatory reaction
e. citric acid cycle, electron transport, glycolysis, preparatory reaction

Answer 1

The correct answer is (b) glycolysis, preparatory reaction, citric acid cycle and electron transport chain.

What is Cellular Respirationand why is it known as cellular respiration?

• Cellular respiration is the process that takes place in the mitochondria of organisms (animals and plants) and breaks down sugars in the presence of oxygen to release energy in the form of ATP.
• Cellular respiration works in the presence or absence of oxygen. But basically, this process is called cellular respiration. This is because cells appear to "breathe" in such a way that they take up molecular oxygen (as an electron acceptor) and release carbon dioxide (as an end product).

How is ATP made during cellular respiration?

Most of the ATP produced by aerobic cellular respiration is produced by oxidative phosphorylation. The released energy is used to create a chemiosmotic potential by pumping protons across the membrane. This potential is used to power ATP synthase and generate ATP from ADP and phosphate groups.

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