Transcript Cells & Energy

Objectives
At the end of this lesson students will:
•
Be able to identify organisms that can carry
out photosynthesis and those that cannot.
•
Be able to explain the process of
photosynthesis.
•
Be able to name the reactants and products
of photosynthesis.
You all know
plants use carbon
dioxide
and give us
oxygen but there
is more
to the story…
Definition

Photosynthesis is a series of chemical
reactions carried out by plants where
energy from the sun is used to make
glucose and oxygen.
CFU: What is photosynthesis?
CFU: What is made during photosynthesis?
Inside the Plant Cells

Plant cells contain special organelles called
chloroplasts. This is where photosynthesis takes place.

Chloroplasts contain the green substance chlorophyll
which is responsible for collecting energy from the sun
and making plants appear green.
CFU: Where does photosynthesis occur?
CFU: Are chloroplasts found in animal cells?
CFU: What is the substance in the chloroplast
that collects energy from the sun?
Which organisms can carry
out photosynthesis??
CFU: How do you know?
Now you try….
On your whiteboard write down which organism
you think can carry out photosynthesis…
A.
B.
CFU: How do you know??
Lets do one more…
On your whiteboard write down which organism you
think can carry out photosynthesis…
A.
B.
CFU: How do you know?
Carbon
Dioxide
Sunlight
Together they
react in the
chloroplast
Water
GLUCOSE
OXYGEN
CFU: Where does the water come from?
CFU: Where does the carbon dioxide come from?
Photosynthesis
sunlight
+
Carbon
Dioxide
Reactants
+
water

Glucose
+
Oxygen
Products
CFU: What are the substances that react (reactants)?
CFU: What are the products of the reaction?
CFU: How does photosynthesis benefit humans?
Objectives
At the end of this lesson students will:
•
Be able to explain the process of cellular
respiration.
•
Be able to name the reactants and
products of cellular respiration.
•
Be able to explain how photosynthesis
and cellular respiration are related.
Remember

In the last lesson we learned that
photosynthesis is a series of chemical
reactions carried out by plants where
energy from the sun is used to make
glucose and oxygen.
Photosynthesis
sunlight
+
Carbon
Dioxide
Reactants
+
water

Glucose
+
Oxygen
Products
CFU: What are the substances that react (reactants)?
CFU: What are the products of the reaction?
CFU: How does photosynthesis benefit humans?
Definition
•
Animal cells make usable energy through
cellular respiration.
•
Cellular respiration is a series of chemical
reactions that transforms the energy in
food molecules into usable cellular
energy.
CFU: How do animal cells make energy?
CFU: Where does the energy come from?
What is Cell Energy?
•
Cell energy is called adenosine
triphosphate or ATP.
•
ATP is the only form of energy a cell can
use.
CFU: What is the name for cell energy?
In the Animal Cell

Cellular respiration occurs in the mitochondria.

In the mitochondria glucose and oxygen are combined to
create water, carbon dioxide, and ATP (energy).
CFU: Where does cellular respiration occur?
CFU: What is ATP?
The Process of Cellular
Respiration
Gas used to
release energy
Glucose
Source of energy
+
Oxygen
Waste
product
Water

+
Product for other
cell activities
CFU:
CFU:
CFU:
CFU:
Carbon
Dioxide
+
ATP
Cell energy
What are the two substances that react (reactants)?
What are the products of the reaction?
What product is useful to plants? How?
Where does this reaction occur?