bio

Question 1

What is ATP synthesized from in the electron transport chain?

Answer 1

ADP

ATP is a higher energy molecule than ADP.

Question 2

How does energy enter the system for ATP synthesis in the electron transport chain?

Answer 2

When NADH and FADH carry high-energy electrons

Their energy is used to transport hydrogen ions across the membrane.

Question 3

What causes the buildup of a charge difference in the intermembrane space?

Answer 3

Transport of hydrogen ions across the membrane

This occurs during chemiosmosis.

Question 4

Which two statements describe the process of ATP synthesis in the electron transport chain? Select two.

Answer 4

1. The ATP synthase spins when hydrogen ions rush past
2. High concentration of hydrogen ions allows them to diffuse back into the matrix.

Question 5

How many ATP molecules are synthesized from four ADP molecules in glycolysis?

Answer 5

Four ATP molecules

However, glycolysis does not yield four molecules of ATP.

Question 6

Why does glycolysis not yield four molecules of ATP?

Answer 6

Two ATP molecules are required to start the process.