Photosynthesis and Cell
Respiration
energy
All cells need_______________
to carry
out their functions, such as making
___________
and transporting
proteins
substances into and out of the cell.
http://khenni.files.wordpress.com/2009/04/irrigationphotosynthesis.gif?w=400&h=357
Sources of Energy
1. The process by which a cell captures energy in sunlight
photosynthesis
and uses it to make food is called ________________.
Autotroph
2. _______________
is an organism that makes its own
food.
3. An organism that cannot make its own food and obtains
energy from eating other organisms is called
heterotroph
______________.
Fungi
4. _________________
obtain their energy from
absorbing nutrients from other organisms.
http://www.biology.iupui.edu/biocourses/n100h/images/41ecosys.gif
Two stages of Photosynthesis
1. Capture Energy from the Sun
a. Most of this process occurs in the
chloroplasts
_______________.
b. ______________
in the chloroplasts absorb
Pigments
the light.
c. The photosynthetic pigment in chloroplasts are
chlorophyll
called _______________.
http://yardandgardenrescue.com/wp-content/uploads/2010/09/chloroplastGoogle-Search1.jpg
Two Stages of Photosynthesis
Two Stages of Photosynthesis Photosynthesis%20and%20Cell%2...
2. Using Energy to Make Food
a. Cells use the captured energy to produce
_______________.
sugars
water
carbon dioxide
b. Cells use ____________
and ______________
as
raw materials for this stage.
c. Small openings on the underside of the leaf are
stomata
called the ________________.
Carbon dioxide
d. _____________________
enters the plant
through the stomata.
Two Stages of Photosynthesis Continued
www.youtube.com/watch?v=pE82qtKSSH4&feature=related
water
carbon dioxide undergo a
e. The _____________
and _____________
series of chemical reactions inside the chloroplasts.
f. One product of the chemical reaction is a sugar
6
called glucose that contains ______
carbon atoms and
carbohydrate
is a type of a __________________.
oxygen
g. The second product is ______________
which exists
the leaf through the stomata.
h. The photosynthesis equation is
6CO2 + 6H2O + light → C6H12O6 + 6O2.
____________________________________________.
i. Some sugar molecules are converted to
____________________.
cellulose
Brain Power: Trace the energy from the
sun through a simple food chain.
Cellular Respiration
1. The process by which cells obtain energy from
cellular respiration
glucose is called _____________________.
2. During the process of respiration,
cells
_____________
break down simple food
glucose
molecules such as ______________
and
release the energy that they contain.
glucose
3. Cells obtain energy when ______________
molecules are broken down during
respiration.
Two Stages of Respiration
Stage 1 – molecules of glucose are broken
down into smaller molecules. This process
cytoplasm
takes place in the _________________.
Oxygen is not involved in this stage and only
a small amount of energy is released.
Two Stages of Respiration Continued
Stage 2 – the small molecules from Stage 1 are
broken down into even smaller molecules in
mitochondria
the ____________.
Oxygen is involved and a large amount of
energy is released.
Cellular Respiration
4. The Respiration Equation C6H12O6 + 6O2 ⇒ 6CO2 + 6H2O + ATP
______________________________
glucose
5. Raw materials for respiration are ____________
oxygen
and __________.
water
6. During photosynthesis ______________
and
carbon dioxide
_________________
are used to produce glucose
and oxygen.
cellular respiration
7. During ____________________,
glucose and
oxygen are used to produce carbon dioxide and
water.
Brain Power
Photosynthesis and respiration can be thought
of as opposite processes. Explain why cellular
respiration adds carbon dioxide to the
atmosphere, photosynthesis does not.
Opposite Processes