Here is the Photosythesis and Respiration processes including the Fermentation process that occured inside the prokaryotic and Eukaryotic Cells to get the required energy for the cell activities!

1. Cell Processes and Energy:
Photosynthesis & Respiration
Chapter 2, Section 1

2. Objectives
 In plants, chloroplasts
capture energy from the
sun in order to make food
during photosynthesis
 Cells release energy from
food through either cellular
respiration of fermentation
 Why it matters:
Understanding how plants &
animals get energy to grow
& develop is an important
part of biology.

3. Objectives
 In plants, chlorophyll (found
in chloroplasts) captures
energy from the sun in order
to make food during
photosynthesis
 Cells release energy from
food through either cellular
respiration or fermentation
 Why it matters:
Understanding how plants &
animals get energy to grow
& develop is an important
part of biology.

4. How Does a Plant Make It’s Own
Food?
 Plants use carbon dioxide (CO2), water (H2O), and
sun’s energy to make food.
 This is called “photosynthesis”
 The food gives plants energy
 Animals get the
energy stored in
plants when they
eat them.

5. How Do Plants Get Energy From
Sun?
 Plants have pigments that
absorb energy from light
 Chlorophyll (found in
chloroplasts) is the
pigment used in
photosynthesis

6. What “Food” do Plants Make?
 The “food” plants
make is a sugar
called glucose
(C6H12O6). Plants
are called ‘
Autotrophs’ that
make its own food.
 Glucose and
oxygen (O2) are
made during
photosynthesis.

7. How Do Organisms Get Energy
From Food?
 Animals cannot make their own food like plants
can and they are called ‘Heterotrophs’.
 But, BOTH plants and animals must break
down (digest) food in order to get energy from it
(so they can live, grow, & develop)
 Cells do this 2 ways: cellular respiration and
fermentation

8. Sec.2
Cellular Respiration &
Fermentation
 Cellular Respiration uses oxygen (O2) to break down
food
 Fermentation does not use oxygen
 Cellular respiration releases more energy from food
than Fermentation.
 So most eukaryotes
(ex: plants & animals)
get their energy
through cellular
respiration
Insectivores

9. Cellular Respiration
 Cellular Respiration
= chemical process
that happens in
cells
 In eukaryotes, it
happens mostly in
the mitochondria

10. Process of Cellular
Respiration
 Food (glucose) is broken down into CO2 and H2O
and energy is released
 C6H12O6 + 6 O2  6 CO2 + 6 H2O + energy (ATP)
 This energy can be used for:
 Keeping a constant body temperature

11. What Do You Notice?

12. Check It Out!
 Did you notice
that cellular
respiration is
just the
opposite of
photosynthesis
?

13. Fermentation
 Happens when cells cannot
get the oxygen they need
for cellular respiration *Alcoholic Fermentation: yeast and
 Fermentation is a way to
get energy when oxygen one celled organisms break down
isn’t available sugars.
 Ex: In short, fast races you
might get a burning
feeling in your leg
muscles because of a
build up of lactic acid
(made during
fermentation), it is called
Lactic Acid Fermentation.

14. Pop Quiz
1) Plants use carbon dioxide (____), water (____),
and the sun’s energy to make food.
2) What type of cell has chloroplasts?
3) BOTH plants and animals must break down
food in order to get ________from it.
4) How are respiration and photosynthesis
related?
5) Fermentation is a way to get energy when
______ isn’t available.