Download Aerobic Respiration Cut Outs

Name: __________________________________
Period: ______
Aerobic Respiration Cut Outs
Purpose: To better understand the process of Aerobic Respiration (to make energy with oxygen).
Procedure:
1. Cut out all of the Aerobic Respiration cut outs.
2. Starting with glucose, arrange the cut outs so that the following 3 reactions (A, B, and C, below)
occur in the order shown – only glue once you are certain of the order! You
may use plain or lined paper to glue down your cut outs.
Important: Whenever you see the words produce, form, or release, use an arrow → to indicate
what has happened. When arranging the cutouts, each step connects to the next step by arrows, and
when things are added or combined, the “+” sign is used.
A. Glycolysis:
1. Glucose (from the food you eat or from photosynthesis in plants) is broken down in the cell’s
cytoplasm and produces 2 pyruvate molecules and 2 ATP molecules. The pyruvates then move
to the matrix of the mitochondrion.
2. In the mitochondrial matrix, 2 Co-Enzyme A molecules are added to the 2 molecules of pyruvate
to produce 2 Acetyl-CoA molecules and 2 CO2 molecules.
3. The 2 CO2 molecules are released into the atmosphere (use an arrow to connect the CO2 to
the atmosphere) and the Acetyl-CoA enters the Kreb’s cycle.
B. Kreb’s Cycle:
1. In the Kreb’s Cycle, the Acetyl-CoA molecules are completely destroyed by enzymes in the
mitochondrion and, as a result, produce 4 CO2 molecules, 2 ATP molecules, and electrons.
2. The CO2 is released into the atmosphere (use an arrow to connect CO2 to the atmosphere).
3. The electrons are taken to the Electron Transport Chain on the inner membrane of the
mitochondrion.
C. Electron Transport Chain (ETC):
1. The electrons from the Kreb’s cycle are passed through the Electron Transport Chain inside the
cell’s mitochondria. As the electrons are passed from one protein to another, 32 ATP molecules
are formed.
2. After this happens, electrons are released from the ETC where they combine with Oxygen O2
(from the atmosphere) to produce water ( use an arrow to connect the atmosphere TO
oxygen).
3. Glue your cut outs to the paper provided, and put “Aerobic Respiration” as your title at the top.
4. For extra credit, compartmentalize your reactions and label them with the parts of the cell in
which they take place.
5. Answer the conclusion questions.
Conclusions:
In which part of the cell do the following reactions occur?
Glycolysis
________________________________
Krebs cycle
________________________________
Electron Transport Chain
________________________________
What is the organic molecule needed to start Aerobic Respiration, and where does it come from?
What are the waste products of aerobic respiration, and during which steps are each of those waste
products generated?
We get the oxygen required for aerobic respiration from the air. Where does the oxygen in the air come
from?
During which step of aerobic respiration is most of the ATP produced?