Biology High School

Cellular respiration connects the degradation of glucose to the formation of ATP, NADH and FADH2 in a series of 24 enzymatic reactions. Describe the major benefit of breaking down glucose over so many individual steps and describe the main role of NADH and FADH2

Answers

Answer 1

Cellular respiration is the process of converting nutrients into energy in the form of ATP through a series of chemical reactions. These reactions are controlled and coordinated by enzymes. Cellular respiration is the process by which energy-rich organic molecules, such as glucose, are broken down and their energy harnessed for ATP synthesis by the mitochondria.

The breakdown of glucose into ATP takes place over 24 enzymatic reactions. The reason for breaking down glucose over so many individual steps is that it allows for the regulation of the process. Breaking down glucose into smaller steps helps to ensure that the energy released during the process is used efficiently.

NADH and FADH2 are electron carriers that play an important role in cellular respiration. They carry electrons to the electron transport chain, where the electrons are used to generate a proton gradient that powers ATP synthesis. NADH and FADH2 are formed during the citric acid cycle (Krebs cycle), which is the third stage of cellular respiration.

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