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Cell Respiration in Review
1.Most Eukaryotic cells produce about ___36___ ATP molecules per glucose molecule.
2. What is the process by which glucose is converted to pyruvic acid?______Glycolysis____________
3. Before the Krebs cycle starts, pyruvic acid is broken down to a two carbon molecule called______
________Acetyl___________ .
4. This 2 carbon molecule bonds with ___CoEnzyme______________ to form Acetyl CoA.
5. With one round of the krebs cycle it produces ____1_____ ATP, ___3_______NADH,
________2___CO2.
6. The waste product of the Krebs cycle is? ____CO2________
7. The making of energy in the absence of oxygen is called ____Anerobic Respiration_________
8. What is the name of the first pathway in cell respiration? ___Glycolysis________________________
9. Where does glycolysis occur in the cell? ___Cytoplasm____________________________
10. The making of energy in the presence of oxygen is called. _ Aerobic
Respiration____________________________
11. Yeast produces _____Ethanol__________ and _______CO2_____________.
12. In the presence of Oxygen, glycolysis precedes the _____Krebs__________________________.
13. In the absence of Oxygen, glycolysis precedes the _______Fermentation____________________.
14. In eukaryotic cells, the ETC takes place in the __________Mitochondrial
Membrane_____________________________.
15. In the prokaryotic cells, the ETC takes place in the ________Cell
Membrane_____________________________.
16. An important molecule that is produced by lactic acid and alcoholic fermentation that is
regenerated back to glycolysis is _________NAD+_____________.
17. The ETC is driven by these two electron carrying products that the krebs cycle makes.
_________NADH________ and _________FADH2_____________
18. In cell respiration more energy is made in the ______ETC__________________ than any other
pathway.
19. Where does the Krebs Cycle occur on the cell. __________Mitochondria_______
20. What is the chemical equation for cell respiration?
___SEE NOTES__________________________________________________________
21. 2 ______Pyruvates______________ molecules result from one glucose molecule in glycolysis.
22. In alcoholic fermentation, ethyl alcohol is produced from this molecule. _____Glucose
___________
23. What does ATP stand for? ___Adenosine Triphosphate_________________
24. What does ADP stand for? ____Adenosine Diphosphate________________
25. How many ATP are produced in the ETC? _____32______________________
26. Lactic acid buildup in your muscles occur because there is lack of ______Oxygen________________.
27. At the end of the krebs cycle, before it goes to the ETC, _____2_________ ATP,
______6______NADH, _____2______ FADH2, and ___________4_____CO2 molecules are formed.
28. Explain how the CO2 molecules and FADH2 and NADH molecules are formed in the Krebs Cycle.
_When citric acid is reduced to a 5 carbon molecule the carbon bonds with O2 to make CO2. This
diffuses into our bloodstream and into our lungs where we breathe it out. The H attached to the
Carbons bond to the NAD and FAD to make NADGH and FADH. This also happens when the 5 carbon
molecule is reduced to a 4 carbon molecule.
______________________________________________________________________________
29. What is the name of the protein in which the Hydrogen ions move back through the mitochondrial
membrane that enables ATP to be made? ______ATP Synthase________________________
30. How many additional ATP are made during fermentation? __0_______________________
31. Glycolysis makes ___4_______ ATP but the NET gain of ATP is ____2_____________. Explain this.
___________The process uses 2 ATP.