Answers for Scientists commonly compare cell respiration to a wood fire ignited by a match. What exactly is the "match" equivalent within a body that sparks the burn of oxygen and glucose in cell respiration?

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Thank you!
by: Jeff

Thank you.

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Complete this sentence: the spark in cell respiration is….
by: Jeff Jensen

The reference to cell respiration never once mentions a spark. Scientists always compare cell respiration to a spark such as a match or spark plug. Is this just metaphoric language or is there actually a physical spark? ATP is not a spark. However if the flow of electrons that helped create ATP is the spark then please say so or supply other answer for the spark. That is the crux of the question. Otherwise just say it is a metaphor and no spark exists. Thank you !

Answer: The name spark is indeed a metaphor, but a good one. Since glycolysis requires 2 ATP to begin (formation of 2 pyruvate), it refers to that break of ATP into ADP releasing energy for the reaction.

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Cell Respiration
by: Biology teacher

Good question.

Let's read the review on Cell Respiration. Just go to question 16 and find out how ATP is consumed in glycolysis.

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