sec.4 overview of cellular respiration by hamdy karim
TRANSCRIPT
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4.4 Overview of Cellular Respiration
Science SMART BoardKing Faisal School
Created by: Hamdy Karim
Grade level(s): 9th_Grade
Subject area: Biology
Overview of Cellular Respiration
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4.4 Overview of Cellular Respiration
Objectives;
Students will be able to answer the questions;
1. How does cellular respiration make ATP?
2. What is Glycolysis?
3. How does cellular respiration look like a mirror image of photosynthesis ?
Done By:
Mr. Hamdy
Karim
KFS, Riyadh,
KSA.
Overview of Cellular Respiration
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4.4 Overview of Cellular Respiration
KEY CONCEPT The overall process of cellular respiration converts sugar into ATP using oxygen.
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4.4 Overview of Cellular Respiration
Cellular respiration makes ATP by breaking down sugars.
• Cellular respiration is aerobic, or requires oxygen.• Aerobic stages take place in mitochondria.
mitochondrion
animal cell
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4.4 Overview of Cellular Respiration
• Glycolysis must take place first.
– anaerobic process (does not require oxygen)– takes place in cytoplasm– splits glucose into two three-carbon molecules– produces two ATP molecules
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4.4 Overview of Cellular Respiration
Cellular respiration is like a mirror image of photosynthesis.
• The Krebs cycle transfers energy to an electron transport chain.– takes place in
mitochondrial matrix– breaks down three-carbon
molecules from glycolysis– makes a small amount of
ATP– releases carbon dioxide– transfers energy-carrying
molecules
6H O2
6CO 2
6O 2
mitochondrion
matrix (area enclosedby inner membrane)
inner membrane
ATP
ATP
energy
energy from glycolysis
1
2
4
3
and
and
and
Krebs Cycle
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4.4 Overview of Cellular Respiration
6H O2
6CO 2
6O 2
mitochondrion
matrix (area enclosedby inner membrane)
inner membrane
ATP
ATP
energy
energy from glycolysis
1
2
4
3
and
and
and
• The electron transport chain produces a large amount of ATP.
– takes place in inner membrane
– energy transferred to electron transport chain
– oxygen enters process
– ATP produced
– water released as awaste product
Electron Transport
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4.4 Overview of Cellular Respiration
• The equation for the overall process is:C6H12O6 + 6O2 6CO2 + 6H2O
• The reactants in photosynthesis are the same as the products of cellular respiration.