Name: Period:

Name: ________________________ Period: _____

Cellular Respiration Worksheet Cellular respiration can take place under two conditions: aerobic and anaerobic. Aerobic respiration involves 3 stages: Glycolysis, the Krebs cycle, and the Electron Transport Chain (ETC). Anaerobic respiration involves 2 stages: Glycolysis and Fermentation. Fermentation can take place through 2 different processes: alcohol fermentation and lactic acid fermentation. Using you textbook and notes from class, summarize the various forms of cell energetics in the tables below and on the other side of this page. Aerobic Respiration – happens when oxygen is present Glycolysis Krebs Cycle ETC What do you start with? What do you end with? What kinds of energy/hydrogen carriers are produced? How many ATP are made? How many ATP are used? NET ATP (made – used) Where does it occur in the cell? What kinds of organisms use aerobic respiration?

Anaerobic Respiration – happens when oxygen is NOT available Fermentation Glycolysis Alcoholic Lactic Acid What do you start with? What do you end with? What kinds of energy/hydrogen carriers are produced? How many ATP are made? How many ATP are used? NET ATP (made-used) Where does it occur in the cell? What kinds of organisms use anaerobic respiration? 1. 2. 3. 4.

What is the net amount of ATP generated through aerobic respiration (glycolysis + Krebs cycle + ETC)? ____ What is the net amount of ATP generated through anaerobic respiration (glycolysis + fermentation)? _______ Which process is most efficient at drawing energy out of glucose? __________________________________ Does glycolysis require oxygen to take place? Explain. ___________________________________________ _______________________________________________________________________________________ _______________________________________________________________________________________