grade 9 science lesson - 1st quarter

1. SCHOOL
I.D.
301364
Mrs. ANGELICA PRINCESS S. PAROAN
Subject Teacher
QUARTER 1 - WEEK 7-8

3.  In an ecosystem, organisms need a balance
environment.
 A balance ecosystem is on which living
thing and non-living thing interacting
harmoniously.
 If any part of the ecosystem is disturbed,
other will also be affected.

4. Differentiate basic features and
importance of
photosynthesis and respiration.

6. PHOTOSYNTHESIS

7. All organisms
need energy
to sustain
life.

8. Forms
of

9. In order to sustain life,
all organisms require
energy, but not all of
them can use light
energy directly for life
activities.

10. To provide the
energy needed by all
organisms, plants
and other
chlorophyll-bearing
organisms capture
the energy of
sunlight and convert
it into chemical
energy stored in the
food.

11. When people and other
heterotrophic organisms eat
food from producers and
consumers, chemical energy
stored from food is transferred
to their bodies.

12.  How do plants manufacture their
own food?
 What are the factors that affect the
rate of photosynthesis?
 How do cells convert stored energy
in food into chemical energy?
 How do materials and energy flow
in the ecosystem?

13. Plants are
great
food
providers

14. Photosynthesis
is a process of
food making
done by plants
and other
autotrophic
organisms.

16. CHLOROPHYLL
- enables these
organisms to make
their own food.

17. Autotrophic
organisms
require light
energy, carbon
dioxide (CO2),
and water
(H2O) to make
food (sugar).

18. Where does
photosynthesis
take place?

19. Pictures of leaves and stem

20. Plants have
two different types of transport
tissue. Xylem transports water
and solutes from the roots to
the leaves, phloem transports
food from the leaves to the rest
of the plant.

21. - the process by
which water
evaporates from
the leaves, which
results in more
water being
drawn up from
the roots.

22. The chlorophyll
is built into
the
membranes of
the
thylakoids.
Chlorophyll
absorbs white
light but it
looks green.

23. Why leaves
look green?

24. White light is consists of
three primary colors: red, blue,
and green. Only red and blue
light is absorbed thus making
these colors unavailable to be
seen by our eyes while the green
light is reflected which makes
the chlorophyll looks green.

25. However, it is the
energy from red light
and blue light that are
absorbed and will be
used in
photosynthesis.

26. The green light that we
can see is not
absorbed by the plant
and thus, cannot be
used in
photosynthesis.

27. 2 Stages of
Photosynthesis

29.  happens in the presence of light.
 occurs in the thylakoid membrane
 converts light energy to chemical
energy.
 Water-one of the raw materials of
photosynthesis-is utilized during
this stage
 Water also facilitates the formation
of free electrons and oxygen

30. The energy harvested during
this stage is stored in the form of
ATP (Adenosine
Triphosphate) and NADPH
( Nicotinamide Adenine
Dinucleotide Phosphate
Hydrogen). These products will
be needed in the next stage to
complete photosynthetic process.

31.  takes place in the stroma
 converts Carbon dioxide (CO2)
into sugar.
 does not directly need light but
needs the products of light
reaction.
 it occurs immediately after the
light-dependent phase.

33. Plants have green pigments
called chlorophyll stored in the
chloroplast. This pigment aids in
capturing light energy from the
sun that enables plants to change
it into chemical energy stored in
the food. This process is called
photosynthesis.

34. Stomata are found on the lower
surface of the leaf that allows the
entrance of carbon dioxide
needed for photosynthesis. They
also serve as exit point for the
oxygen produced during
photosynthesis.

35. Temperature
Carbon dioxide
Water
Light energy

36. CELLULAR
RESPIRATION

37. RECALL!
Respiration is the process of
taking oxygen from the air and
cycling it through the lungs,
which then gives oxygen to
blood to be used in the body.
The carbon dioxide waste is
expelled out of the lungs.

38. Cellular respiration uses
glucose or sugars, from
food molecules and turns
them into carbon dioxide,
water, and ATP a
nucleotide essential to the
body.

39. Cellular respiration
can occur both
aerobically (using
oxygen), or
anaerobically
(without oxygen).

40. During aerobic
cellular respiration,
glucose reacts with
oxygen, forming ATP
that can be used by the
cell. Carbon dioxide and
water are created as
byproducts

42.  WHAT I KNOW (PRETEST)
 ACVITITY 1,2,3
 ASSESSMENT