Cellular Respiration And Fermentation - Biology Worksheet (Page 5 of 8) in pdf

Cellular Respiration And Fermentation - Biology Worksheet Page 5

The Krebs Cycle

For Questions 4–7, write True if the statement is true. If the statement is false,

change the underlined word or words to make the statement true.

4. The pyruvic acid produced in glycolysis enters the chloroplasts if

oxygen is present in a cell.

5. In the matrix, pyruvic acid is converted to lactic acid before the

Krebs cycle begins.

6. The compound that joins with a 4-carbon molecule in the Krebs

cycle is called acetyl-CoA.

7. Carbon dioxide is the only product of the Krebs cycle that is not

re-used or used in other stages of cellular respiration.

8. Complete the flowchart to show which of the Krebs cycle’s many products go on to the

third stage of cellular respiration.

Electron Transport Chain

Krebs Cycle

Electron Transport and ATP Synthesis

For Questions 9–14, complete each statement by writing the correct word or words.

9. In eukaryotes, the electron transport chain is composed of a series of electron carriers

located in the

of the mitochondrion.

10. In prokaryotes, the electron transport chain is in the

11.

serves as the final electron acceptor of the electron transport chain.

12.

and

pass high-energy electrons to the electron

transport chain.

13. The transfer of high-energy electrons down the electron transport chain causes

to be transported across the mitochondrial membrane.

14. ATP synthases produce the force needed to add one

to each ADP

molecule by spinning when hydrogen ions flow through them.

Cellular Respiration And Fermentation - Biology Worksheet Page 5