9.2 Electron Transport Chain Mr. O'Neill's Biology

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Where do the electrons come from?

10 NADH, 2 FADH₂

Where do the electrons go?

Oxygen (O₂)

What does O₂ become after it gets an electron?

H₂O

What is the immediate effect of the ETC?

It creates a hydrogen concentration gradient.

Where is a low hydrogen (H+) concentration created?

mitochondrial matrix

Where is a high hydrogen (H+) concentration created?

intermembrane space (of mitochondria)

What is the eventual effect of the ETC?

ATP

Where is the ETC located?

Inner membrane of mitochondria

How much ATP does the ETC make for one molecule of glucose?

approximately 30-34 ATPs

How much ATP does ALL OF RESPIRATION make for one molecule of glucose?

approximately 34-38 ATPs

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