4. Sunlight energy
ECOSYSTEM
Photosynthesis
in chloroplasts
Glucose
CO2
+ +
H2O
O2
The connection between
photosynthesis and
cellular respiration
Cellular respiration
in mitochondria
ATP
(for cellular work (ل
Heat energy
6. Breathing
CO2 O2
Lungs
CO Bloodstream 2 O2
Muscle cells carrying out
Cellular Respiration
Glucose + O2
CO2 + H2O + ATP
The connection between breathing and cellular respiration
14. Loss of hydrogen atoms
C6H12O6 + 6 O2
6 CO2 + 6 H2O + Energy
(ATP)
Rearrangement of hydrogen atoms (with their electrons)
in the redox reactions of cellular respiration
(Oxidation)
Glucose
Gain of hydrogen atoms
(Reduction)
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19. NADH
NAD+ ATP
H+
2e–
Controlled
release of
energy for
synthesis
of ATP
+
H+
2e–
O2
H2O
1-
In cellular respiration, electrons fall 2
down an energy staircase and finally
reduce O2
23. Glucose
NAD+
+
2
2 ADP
2 NADH
2 P
6.7 Glycolysis harvests chemical energy
by oxidizing glucose to pyruvate
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2 ATP +
2
H+
2 Pyruvate
An overview of glycolysis
– Ionf tNhAeD p+roacrees rse,d tuwcoe dm otole tcwuole s molecules of NADH
– Amto tlheec uslaems eo ft iAmTeP, tawreo pprhoodsupcheodr yblayt isounbstrate-level
26. An overview of cellular respiration
NADH Mitochondrion
High-energy electrons
carried by NADH
NADH
CITRIC ACID
CYCLE
GLYCOLYSIS
Glucose Pyruvate
and
FADH2
OXIDATIVE
PHOSPHORYLATION
(Electron Transport
and Chemiosmosis)
CO2 CO2
ATP
Substrate-level phosphorylation Substrate-level phosphorylation
Oxidative phosphorylation
ATP
ATP
Cytoplasm
Inner mitochondrial
Membrane
35. Food, such as
peanuts
Carbohydrates Fats Proteins
Sugars Glycerol Fatty acids Amino acids ض ا أ
Amino groups
Glucose
OXIDATIVE
PHOSPHORYLATION
(Electron Transport
and Chemiosmosis)
CITRIC ACID
CYCLE
Acetyl CoA
Pyruvate
G3P
GLYCOLYSIS
ATP
Pathways that break down various food molecules