Question

The synthesis of ATP from ADP and Pi is an _______ reaction. In mitochondria, ATP synthesis is driven by the flow of _______ down a concentration gradient established by _______. A) exergonic; protons; glycolysis B) endergonic; protons; the citric acid cycle endergonic; C) Na+ ions; electron transport exergonic; Na+ ions; D) glycolysis endergonic; protons; electron transport

Answer 1

Answer:

A) exergonic; protons; glycolysis

Explanation:

The synthesis of ATP from ADP and Pi is an exergonic reaction. In mitochondria, ATP synthesis is driven by the flow of proton down a concentration gradient established by glycolysis.

Answer 2

Answer:

D) glycolysis endergonic; protons; electron transport

Explanation:

• The synthesis of ATP from ADP and Pi is an  (Na+ ions) oxidation reaction.
• The mitochondrial electron transport chain oxidizes the intermediate electron carriers, NADH.
• The synthesis of ATP from ADP and Pi by mitochondria is linked to an electron transport.
• The mitochondrial ATP synthase makes ATP at the expense of the proton gradient established by electron transport.
• The synthesis of ATP from ADP and Pi is an glycolysis endergonic reaction. In mitochondria, ATP synthesis is driven by the flow of protons down the concentration and electrical gradient established by electron transport.