AUTOTROPHIC
NUTRITION
PHOTOSYNTHESIS
Nutrition
Autotrophic nutrition: (Plants)
Organisms that can synthesize organic
compounds from inorganic compounds.
(Make sugar from water)
Heterotrophic Nutrition: (Animals)
Organisms that can not synthesize organic
compounds from inorganic.
Sun
Photosynthesis
The making of food from
Sunlight!!.
Where does Photosynthesis take
place?
Plants?
What gives plants this ability?
Where?
How?
Why?
The Chloroplast
2 Essential regions where photosynthesis takes place.
STROMA:
GRANA:
Fluid filled with
Stacked membranes.
enzymes.
Where the LIGHT
Where the DARK
REACTION takes
REACTION takes
place.
place
Grana
Stroma
THE OVERALL REACTION
SUNLIGHT
6CO2 +12 H2O
C6H12O6 + 602 + 6H2O
ENZYMES
2 REACTIONS AND THEIR GOALS
LIGHT REACTION:
TO PRODUCE OXYGEN
FROM WATER
DARK REACTION:
TO PRODUCE FOOD (C6H12O6)
FROM CO2 AND HYDROGEN (H2)
6CO2 +12 H2O
C6H12O6 + 602 + 6H2O
Enzymes, light
O2
Sunlight
Photolysis
H2
To Dark
Reaction
LIGHT REACTION
H2O
ATP
Grana
ADP
P
Energy
ADP + P
Reactions in between
NADPH2
H2
From Light
Reaction
H2
NADP
To Dark
Reaction
ENERGY
6CO2 +12 H2O
C6H12O6 + 602 + 6H2O
Enzymes, light
CO2
DARK REACTION
H2O
Enzymes of Stroma
C6H12O6
2 PGAL
H2
Energy
Phosphoglyceraldehyde
(3 carbon compound)
Photosynthesis and Respiration are
two equal and opposite reaction.
To maintain a balance (HOMEOSTASIS)
between the environment and the organisms
that occupy it.
Autotrophs
(Plants)
CO2 + H2O
Heterotrophs
(Animals)
C6H12O6
+ O2 +
H 2O