A lesson in earth and life science to better understand cellular respiration as complimentary process of photosynthesis

5. At the end of the lesson students are
expected to:
a. Define cellular respiration process
b. Explain the major stages of cellular
respiration
c. Describe how organism obtain and
utilize energy
d. Appreciate the significance of cellular
respiration as complement to
photosynthesis process

7. What is cellular respiration?
• Is the process by which the cell or
organism utilizes chemical energy from
nutrients (biomolecules) to produce
Adenosine Triphosphate (ATP).

8. Adenosine Triphosphate (ATP)
• Is referred to as the energy currency of
the cell.
• The cells use ATP for various energy-
requiring processes such as digestion,
respiration, transport of food molecules
and cell division.

9. Let us spy the
process!

11. MR. BANDI, CAN YOU
READ THE CHEMICAL
EQUATION OF THE
CELLULAR RESPIRATION ?

14. MR. FELISAN, DO YOU
AGREE?

15. Cellular Respiration Overview
Three Stages:
1. Glycolysis
2. Krebs Cycle
3. Electron Transport Chain
 The main form of Energy
produced =
ATP

16. Cellular Respiration Overview

17. Glycolysis
Glyco = glucose lysis = breakdown
• Occurs in the cytoplasm of the cell
• Molecules of GLUCOSE are broken down into 2
molecules of Pyruvic Acid.
• Cell must use (invest) 2 ATP
• Products:
--- 2 pyruvic acid
--- 2 ATP
--- 2 NADH

18. Site of cell respiration
• The mitochondria is the organelle
where the final stages of cellular
respiration occurs.
- Krebs Cycle
- Electron Transport Chain

19. Krebs Cycle

21. ELECTRON TRANSPORT
CHAIN

31. Process Site/Locus in
the cell
Reactants Product
s
ATP
Produced
Glycolysis cytoplasm Glucose ATP, NADH,
Pyruvate
2 ATP
Krebs
Cycle
matrix of
mitochondrion
AcetylcoA;
oxaloacetate
CO2, ATP,
NADH
2 ATP
ETC inner
membrane of
mitochondrion
Oxygen,
hydrogen (high
energy
electrons)
ATP, H2O
32
molecules
of ATP
In summary,

32. APPLICATION
• Explain how cellular respiration is a
complementary of the photosynthesis
process through this illustration.

33. Will you give your idea
about the illustration?

34. APPLICATION

35. I. In a one-half crosswise paper, tabulate the differences among the
stages of cellular respiration as shown.
Process Site/Locus in the
cell
Reactants Products ATP Produced
Glycolysis
Krebs Cycle
ETC

36. II. Choose form the words inside the box the correct answer that will
complete each sentence below.
ATP glycolysis
Pyruvic acid oxygen
Fermentation NAD+
1. In the electron transport chain, the final acceptor of electrons is _____, thereby
producing water.
2. If two molecules of glucose undergo the process of glycolysis, four molecules of
____ will be produced.
3. Yeast cells can undergo the process of glycolysis without the presence of oxygen
through a process called ________.
4. The process of glycolysis may continue only if a constant supply of an electron
carrier called ____ is present in the cell.
5. The energy produced during the process of respiration is stored in the
bonds of _____ which is an unstable molecule.

37. ASSIGNMENT
In a piece of paper, tabulate the differences between photosynthesis and
cellular respiration.
Process Site/Locus Reactants Products
Photosynthesis
Respiration