WEEK 2 CELLULAR RESPIRATION FOR GRADE 12 STEM

CELLULAR RESPIRATION THAT OCCURS IN THE CELL

1. WEEK 2
GENBIO1
Welcome back to our Biology Class.

2. Let’s Pray

4. 1. Always observe our health protocols.
2. Turn off your phones. Using of phone during class
hours is strictly prohibited. Violation of this rule is an
automatic ground for phone confiscation.
3. One speaker at a time. When someone is
speaking, keep quiet and listen. If you want to say
something, raise your hand and wait for your teacher
to recognize you.

5. ACTIVITY 2
Copy and Answer

6. Analyze the picture in the next
slide and answer the following
questions.
PICTURE ANALYSIS

7. General Biology 1

8. General Biology 1
1. What is the picture all about?
2. Why do we need energy?
3. State the important of energy to our
body and to other organism?
4. How do photosynthesis occur?

9. Score Description
5The answer explains the topic well. It is comprehensive and concise. All parts of the
answer are clear, accurate, and correct.The answer is elaborated through giving correct
examples that are based on the real-life situations.
4The answer explains the topic well. It is comprehensive but verbose (too wordy).
Almost all parts of the answer are clear, accurate and correct.
3The answer provides an explanation of the topic but it is not comprehensive. Some parts
of the answer are not related to irrelevant with the topic.
2The answer shows poor understanding of the topic. Almost all parts of the answer are
either vague (not clear), inaccurate, incorrect or irrelevant with the topic.
1The answer is irrelevant.
Scoring Guide

10. DifferentiatethelightreactionfromtheCalvinCyclethroughtheVenndiagram.(1
pointeach)

11. Make your ownVersion of Howphotosynthesis
happen? (Drawing)

12. Light
Light
Reactions
Calvin
Cycle
Chloroplast
[CH
2O]
(sugar)
ATP
NADPH
NADP

ADP
+P
i
H
2O CO
2
O
2
Figure 10.6-4

14. OBJECTIVES
1.Differentiate aerobic from anaerobic
respiration
2.Explain the major features and sequence of
the chemical events of cellular respiration

15. OUTLINE
Function of Cellular Respiration
Comparison of Photosynthesis and Cellular
Respiration
Aerobic and Anaerobic Respiration

17. ATP

18. RESPIRATION
is the process of
releasing energy from
the breakdown of
glucose.

19. USES OF ENERGY
oWorkingyourmuscles
oGrowthandrepairofcells
oBuildinglargermoleculesfromsmallerones(e.g.proteinsfromamino
acids)
oAllowingchemicalreactionstotakeplace
oAbsorbingmoleculesinactivetransport
oKeepingyourbodytemperatureconstant
oSendingmessagesalongnerves

20. 
Cellularrespirationisasetofmetabolicreactionsand
processesthattakeplaceinthecellsoforganismsto
convertchemicalenergyfromoxygenmoleculesor
nutrientsintoadenosinetriphosphate,andthenrelease
wasteproducts.

23. Comparison of Photosynthesis and
Respiration
Photosynthesis Respiration
Produces sugars from light
energy
Burns sugars for energy
Stores energy Releases energy
Occurs only in cells with
chloroplasts
Occurs in most cells
Oxygen is produced Oxygen is used
Water is used Water is produced
Carbon dioxide is used Carbon dioxide is produced
Requires light Occurs in dark and light

24. TYPES OF RESPIRATION
Aerobic Respiration -requires oxygen in
order to produce ATP (mitochondria).
Anaerobic Respiration -absence of
oxygen.

28. Stages in aerobic respiration
-Glycolysis
•In cytoplasm
•Glucose → 2 pyruvate
•Net: 2 ATP+ energy carriers

29. Stages in aerobic respiration
Krebs Cycle (Citric
Acid Cycle)
•In mitochondria (eukaryotes)
/ cytoplasm (prokaryotes)
•Pyruvate broken down → CO₂
•2 ATP+ energy carriers

30. Stages in aerobic respiration
Electron Transport
Chain (ETC)
•In inner mitochondrial
membrane (eukaryotes)/ cell
membrane (prokaryotes)
•Uses energy carriers to make
ATP
•~34 ATPmade
•Oxygen is the final electron
acceptor→ forms H₂O

31. NOTE:
The amount of ATP produced by prokaryotes and eukaryotes is
similar and is around 38 ATPs. The sole distinction is that the process
of cellular respiration in eukaryotes consumes 2 ATPs, thus we say
that the net yield is
38-2 = 36 ATPs

32. CHEMICAL EQUATION

35. CHEMICAL EQUATION

36. CHEMICAL EQUATION

37. SUMMARY
CELLULAR RESPIRATION

39. SUMMARY
TYPES OF CELLULAR RESPIRATION
Aerobic respiration
Anaerobic respiration

40. SUMMARY
Aerobic Anaerobic
Presence of Oxygen Yes No
Cells That Use It Most Cells Prokaryotes
Energy Released High
(36-38 ATP molecules)
Lower
(Between 36-2 ATP
molecules)
Reaction Sites Cytoplasm, mitchondria Cytoplasm
Stages Involved 1.Glycolysis
2.Kreb’s Cycle
3.Electron Transport
Chain
1.Glycolysis
2.Fermentation

41. SUMMARY
Aerobic Anaerobic
Presence of Oxygen Yes No
Cells That Use It Most Cells Prokaryotes
Energy Released High
(36-38 ATP molecules)
Lower
(Between 36-2 ATP
molecules)
Reaction Sites Cytoplasm, mitchondria Cytoplasm
Stages Involved 1.Glycolysis
2.Kreb’s Cycle
3.Electron Transport
Chain
1.Glycolysis
2.Fermentation

42. SUMMARY
CHEMICAL EQUATION OF AEROBIC RESPIRATION

43. SUMMARY
CHEMICAL EQUATION OF ANAEROBIC RESPIRATION

44. Activity: 1
Prepareadetailedgraphicorganizershowingthemajorfeaturesand
sequenceofthechemicaleventsofcellularrespiration.Makesurethat
yourorganizercontainsthemostimportantinformationaboutthesaid
process.Theorganizershouldalsobeeasytounderstand.Usethe
rubriconthenextslideasyourguideinaccomplishingthistask.