1) Photosynthesis involves two main reactions: the light-dependent reaction that uses solar energy to produce ATP and NADPH, and the light-independent reaction that uses ATP and NADPH to incorporate carbon dioxide into organic compounds like glucose. 2) The chloroplasts in plant leaves are where photosynthesis takes place. Within the chloroplast are structures called thylakoids that contain the green pigment chlorophyll, which absorbs sunlight to drive photosynthesis. 3) Photosynthesis produces oxygen, ATP, NADPH, and glucose from carbon dioxide, water, and sunlight. Glucose is used by plants as an energy source or converted into other organic molecules.

1. BioEnergetics
Where Do Cells Get their Energy?
Photosynthesis
Respiration

3. Solar Energy

5. Photosynthesis
Trapping the Sun’s
Energy to convert H 2 O and
CO 2 into oxygen and
sugar is called
glucose C 6 H 12 O 6

6. Glucose has
Chemical Energy
For bonding
Potential Energy

7. Both
Heterotrophs and Autotrophs
Carry Out
Cellular Respiration

8. Protists
Fungi
Animals
Plants Also
Bacteria

9. Cellular Respiration
Releasing the energy by breaking
down chemical bonds
(Energy is stored in glucose)

10. ATP

11. ATP
Basic Energy Source
For All Cells

13. P P P
Adenosine
ATP

14. ADP
Adenosine
P P
(ADP)
Energy

15. Energy needed for:
Cell
Activities

16. ATP Used For Cellular Activities
 Active Transport
 Muscle Contraction
 Synthesis of Organic Compounds
 Repair
 Digestion

17. So Folks…Let’s
put that all
together

18. CO2 + H20
ATP:
Photosynthesi Cell
fuel for
Solar Energy s Glucose cells Activities
light energy to C6H12O6
chemical Cellular
energy Respiration growth
reproduction
active transport
making proteins
O2 + C6H12O6
Autotrophs
1. Plants Heterotrophs
2. algae 1.Animals
3. Some 2.Plants
bacteria 3.fungi

19. Our Focus So Far
Has Been On
Elements of
Photosynthesis

20. Lets Review Them
Lets start with chromatography

21.  Lets take a
look at
chloroplast,
then energy
organelle

22. Chlorophyll
 If we sliced
chloroplast, this is
what it would look like
inside
 Inside the thylakoid is
a structure called
chlorophyll, a pigment
which captures the
suns energy

23. These Pigments Absorb Some
Wavelengths of Light and Reflect
Others

28. Chlorophyll Pigments
 Chlorophyll a is most
common pigment &
looks bluish-green.
 Chlorophyll b looks
more yellow- green.
 Carotenoids pigments
look yellow or yellow-
orange

29. Chromatography
 Chromatography can
be used to separate
components of a
mixture of molecules.
 The molecules of the
mixture are carried up
the paper based on
its molecules size and
solubility properties

30. Accessory
pigments
Pigments that work
with chlorophyll a
and also absorb light
and transfers it as
energy

31. The Next Thing We
Investigated
is
Where Photosynthesis
Happens

32. Somewhere Here in Leaves

34. So Where are all
these
Chloroplasts
located in complex
Leaves?

35. We Looked at Lilac Leaf
Cross Sections

37. Upper Epidermis
Palisaide Layer
ls
el
C
rd
Mesophyll
ua
G
d
an
e
at
m
Spongy Layer
to
S
Lower Epidermis

43. Where Does
The Most
Photosynthesis
Happen?

44. Cross Section of a leaf

45. Take A Close Up Look At
These Cells

46. Palasaide
Cells

49. Granna

51. Now We Will Look at
the Process
of Photosynthesis
But First A Question
????????????

52. Where Do Plants Get Their
Food ?

53. Formula for Photosynthesis
sun
CO 2 + H 2 0 C 6 H 12 O 6 + O 2
enzymes

54. Photosynthesis in leaves

55. C 6 H 12 O 6
Like
Sugars, Starch,
Cellulose, Lipids,
Can Be Converted Amino Acids,
Proteins
To Other
Nucleic Acids,
Organic Compounds And
Others

56. Su
ga
rs,
Sta
rch
es,
Organic Matter
P
rot
ein
s,
etc

57. A Closer Look at
Photosynthesis
Two Reactions
Light Dependent Reaction
Light Independent Reaction

59. NADP +
Nicotinamide Adinine Dinucleotide
Phosphate
H + H+ H+ H+
H+ H+ H+ H+ H+ H+
H+ H+ H+ H+
H+ H+ H+
H+

60. Water is Split
H 2O  O 2 + H +
ATP
Is made

61. Let’s Keep It Simple
Three End Products
Of the
Light Dependent
Reaction
O2
ATP
NADPH

62. So Far We Have
H and ATP
+
What Else Do We
Need Carbon and Oxygen
To Make Atoms
C 6 H 12 O 6 ?
Where Do We Get Carbon and Oxygen Atoms ?

63. CO2
From the
Atmosphere
.04%

64. The Second
Reaction
Of
Photosynthesis

68. This Process Produces
150,000,000
Box Cars of Organic
Matter / Year

69. Photosynthesis
Is The Most Important
Biological Process
Which Happens on Earth
That Makes Chlorophyll
The Most Important
Chemical Compound
On Earth

70. That’s
All