Intervention Material in Science (PHOTOSYNTHESIS)

2. JOHN FLORENTINO E. ECHON
Proponent, Taltal National High School
LENIE N. ELAMPARO, Ed. D.
Principal II, Taltal National High School
A Strategic Intervention Material
in Science 9
APRIL 2016

5. WHAT IS PHOTOSYNTHESIS?
Plants, algae, and other chlorophyll-bearing organisms capture
light energy and use it to produce food. This energy is passed on
to animals that feed directly on plants or on other animals that
have fed on plants. The entire process of capturing light energy
to produce food is called photosynthesis.
The equation is:
6CO2 + 6H2O + light chlorophyll -> C6H12O6 + O6

6. REMEMBER
In the light-dependent process, light strikes chlorophyll in
such a way as to excite electrons to a higher energy state.
In a series of reactions, the energy is converted (along an
electron transport process) into ATP and NADPH. Water is
split in the process, releasing oxygen as a by product of
the reaction. The ATP and NADPH are used to make C-C
bonds in the dark reaction. The photosynthetic process, in
which food(sugar) molecules are formed from the carbon
dioxide in the atmosphere with the use of ATP can occur
in the dark as long as ATP is present.
Photosynthesis is two stage process. The light reaction that
took place in the grana of the chloroplast and the dark
reaction that took place in he stroma of the chloroplast.

7. Photosynthetic General Equation

8. What Happens during the
photosynthesis?

12. Photosynthetic General Equation

13. Study the diagram below and complete it using the words in the box.
SUN
Light energy
Is absorbed by
Energy carrier that becomes ENERGIZED CHLOROPHYLL that supplies energy to
split and add
2H
That is released
That are trapped by
NADP (H acceptor)
forming
For use in the
dark reaction
p
to
( energy carrier)
forming
Water Oxygen
NADPH2 Water
Chlorophyll

15. Photosynthetic General Equation
1. Which of the following reactions is also known as photo phase?
a. Light dependent b. Light independent c. Anaphase
2. Which of the following reactions is also known as synthesis phase?
a. Light dependent b . Light independent c. Metaphase
3. What kind of energy is used to split two molecules of water?
a. Light b. Proton c. Neutron
4. What is the energy source of the cell?
a. NAD b. ADP c. ATP
5. What is made up of 5-carbon sugar and an important carbon dioxide acceptor?
a. ATP b. RUDP c. PGAL

17. COMPLETE THE SENTENCE
The ___________ is the conversion of light energy into
chemical energy. The light dependent reaction includes
the conversion of __________ energy into electron
energy, then into short-term energy storage __________.
The __________ reaction involves the conversion of
short-term energy storage to long term energy storage
___________.

19. Dela Cruz, Susana B. Biology ( Pheonix Next Century)
Agar, Irene C. et.al. Science and Technology II