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TRANSCRIPT
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7th Grade
Matter and Energy in Everyday Life
2015-10-29
www.njctl.org
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Table of Contents
· Photosynthesis· Photosynthesis Formula Game
· Cellular Respiration· Matter and Energy Flow
Click on the topic to go to that section
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Energy for Life
Where do you think all organisms on Earth get their
energy?
Do different organisms get energy from different places or
do all organisms get energy from the same place?
Brainstorm at your table and write your thoughts below.
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Energy for Life
All organisms get their energy from the sun!
How is this possible though? Isn't this giraffe getting its energy from the tree he is
eating?
Brainstorm at your table and write your thoughts below.
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The sun's energy cannot be used by cells without some help.
Photosynthesis is the process that
makes the energy of sunlight usable for
all living things.
Photosynthesis
How do plants get the energy from the sun?
Once you have come up with an idea, move the picture for the answer.
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Are there any animals who perform photosynthesis?
Plants Bacteria Algae
Many living things can perform photosynthesis:
Photosynthesis
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1 Where does the energy for life come from?
A Earth
B The Sun
C Food
D Fossil Fuels
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1 Where does the energy for life come from?
A Earth
B The Sun
C Food
D Fossil Fuels
[This object is a pull tab]
Ans
wer
B
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Photosynthesis Discovery Lab
Complete Lab assignment according to teacher directions.
Check out this video about photosynthesis.
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Photosynthesis Discovery Lab
Complete Lab assignment according to teacher directions.
Check out this video about photosynthesis.
Teac
her N
otes
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Find activity by clicking here.
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In addition to food, what do plants provide to us which
we (and the fish in this picture) need?
Write your thoughts below.
Chemicals Involved in Photosynthesis
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Glucose is sugar, a complex carbohydrate containing carbon. The individual molecules of carbon, hydrogen and oxygen are joined together to make this molecule.
Chemicals Involved in Photosynthesis
Reactants (what goes into photosynthesis):· Water: H2O· Carbon dioxide: CO2
Products (what comes out of photosynthesis):· Oxygen: O2
· Glucose: C6H12O6
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2 What chemical is not part of the photosynthesis process?
A carbon dioxide
B water
C glucose
D carbon monoxide
E oxygen
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2 What chemical is not part of the photosynthesis process?
A carbon dioxide
B water
C glucose
D carbon monoxide
E oxygen [This object is a pull tab]
Ans
wer
D
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Plant Cell Review
In the last chapter, we learned about cells and organelles.
At your table, think back and come up with a list of some cell
characteristics and organelles which are specific to plants alone.
Be ready to give an example to the class!
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The pigment chlorophyll, which makes leaves green and is found inside the chloroplasts, collects
the energy of sunlight.
The roots collect water and the stomata of the leaves collect
CO2. These two materials are called the reactants.
Reactants for PhotosynthesisPhotosynthesis occurs mainly in the leaves of plants and in the
chloroplasts.
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3 Which of the following are used in Photosynthesis? (select all that apply)
A Sunlight
B Water
C Hydrogen
D Carbon Dioxide
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3 Which of the following are used in Photosynthesis? (select all that apply)
A Sunlight
B Water
C Hydrogen
D Carbon Dioxide
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Ans
wer
A, B, D
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4 Which plant parts are used in the collection of raw materials for photosynthesis?
A chloroplast and endoplasmic reticulum
B mitochondria and golgi body
C leaves and nucleus
D chloroplast and stomata
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4 Which plant parts are used in the collection of raw materials for photosynthesis?
A chloroplast and endoplasmic reticulum
B mitochondria and golgi body
C leaves and nucleus
D chloroplast and stomata[This object is a pull tab]
Ans
wer
D
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Step 1: Collection of raw materials (sunlight energy, water, carbon dioxide). Step 1 is called the light dependent reactions.
Step 2: Processing of the raw materials to form glucose and oxygen. This step is called the Calvin Cycle, which is also known as the light independent or dark reactions.
Multi-Step Process
Photosynthesis is a multi-step process.
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The Calvin Cycle occurs when the molecules of carbon dioxide and water are taken apart , rearranged and recombined using the energy in sunlight to make glucose and oxygen.
The Calvin Cycle
The Calvin Cycle is named for Melvin Calvin, who in 1937 alongside his colleagues at the University of California, discovered the process.
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5 What is the name of the cycle that is also known as the light independent reactions?
A Calvin Cycle
B Photosynthesis Cycle
C Hobbes Cycle
D Respiration Cycle
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5 What is the name of the cycle that is also known as the light independent reactions?
A Calvin Cycle
B Photosynthesis Cycle
C Hobbes Cycle
D Respiration Cycle[This object is a pull tab]
Ans
wer
A
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The Calvin Cycle
It is not really dark! It can happen anytime
of the day, but does not require light to
work.
Why is the Calvin cycle also called the dark reactions?
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______ + _____ _______ + ______
Photosynthesis Equation
Drag and drop the reactants and products into the correct place in the equation.
Carbon
DioxideWater Glucose Oxygen
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The process can be simplified into the following equation:
6CO2 + 6H2O C6H12O6 + 6O2sunlight
The equation above contains 6 carbon molecules, 12 hydrogen molecules, and 18 molecules in both the reactants and products.
They have just been regrouped into different compounds.
Photosynthesis Equation
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Photosynthesis Formula Game
Learn more about photosynthesis and formulas
by playing this game.
Return to Table of Contents
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Photosynthesis Formula Game
Learn more about photosynthesis and formulas
by playing this game.
Return to Table of Contents
Teac
her N
otes
[This object is a teacher notes pull tab]
Find activity by clicking here.
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6 What are the products of photosynthesis?
A Water and carbon dioxide
B Glucose and oxygen
C Carbon dioxide and glucose
D Water and oxygen
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6 What are the products of photosynthesis?
A Water and carbon dioxide
B Glucose and oxygen
C Carbon dioxide and glucose
D Water and oxygen
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Ans
wer
B
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The process of photosynthesis has stored the energy of sunlight for later use!
Overall Idea: Photosynthesis
Glucose is used by the cell immediately or stored for growth or later use. The oxygen is released as a waste product, it leaves
through the stomata.
This is good news because humans and many other animals rely on this oxygen!
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Set Sail for the Island of Photosynthesis Project
Please use lab sheets to complete this assignment.
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Photosynthesis and respiration have a special relationship.
Photosynthesis and Cellular Respiration
In animals, breathing is also known as respiration. Our cells also need to breathe. What do you think the relationship
between photosynthesis and respiration is?
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This happens in the mitochondria and the
cytoplasm.
Cellular Respiration
Humans and other animals do not photosynthesize. Instead, our cells perform a process called cellular respiration.
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In photosynthesis, plants take in water and carbon dioxide and produce glucose and oxygen.
Photosynthesis vs. Cellular Respiration
Glucose (food)
Oxygen
In order for cellular respiration to occur, cells need to take in this
glucose (sugar), which is collected through food.
The cells also need this oxygen, which is collected by lungs, gills, or
other similar structures.
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Cellular Respiration
Glucose (food)
Oxygen
H
O
H
C OO
water
Carbon Dioxide
Energy
Our cells turn these reactants into water and carbon dioxide, which coincidentally is needed by photosynthetic organisms!
In this process, our cells also release
energy. This means that cellular
respiration is an exothermic reaction.
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____ + _____ _____ + _____+ _____
Cellular Respiration Equation
Drag and drop the reactants and products into the correct place in the equation.
Carbon
DioxideWater
GlucoseOxygenEnergy
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Cellular Respiration Equation
C6H12O6 + 6O 2 6CO 2 + 6H 2O + ATP
This equation has 18 molecules of oxygen, 12 molecules of hydrogen and 6 molecules of carbon on both sides of the equation.
ATP, or adenosine triphosphate, is the source of power in the cell.
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Cellular Respiration Molecular Model Activity
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Cellular Respiration vs Photosynthesis
Work together with your game boards from the Photosynthesis Formula game to complete the Venn Diagram in your class
work section.
How does the formula for cellular respiration relate to the formula for photosynthesis?
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Cellular Respiration vs Photosynthesis
These two processes are opposites.
The products of one are the raw materials of the other.
Photosynthesis produces glucose and oxygen, which are then used by cellular respiration to release energy, carbon dioxide and water.
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7 What is the relationship between photosynthesis and cellular respiration?
A There is no relationship
B They are identical
C They are very similar, but not identical
D They are opposite processes
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7 What is the relationship between photosynthesis and cellular respiration?
A There is no relationship
B They are identical
C They are very similar, but not identical
D They are opposite processes[This object is a pull tab]
Ans
wer
D
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Complete the chart below
Energy, water and carbon dioxide RELEASED.
Energy STORED. Glucose and oxygen RELEASED.
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8 How does energy flow through the cycle of photosynthesis and cellular respiration?
A Energy is stored and never released.
B Energy is stored by photosynthesis and released by cellular respiration.
C Energy is released by photosynthesis and stored by cellular respiration.
D Energy is released by photosynthesis and cellular respiration.
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8 How does energy flow through the cycle of photosynthesis and cellular respiration?
A Energy is stored and never released.
B Energy is stored by photosynthesis and released by cellular respiration.
C Energy is released by photosynthesis and stored by cellular respiration.
D Energy is released by photosynthesis and cellular respiration.
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Ans
wer
B
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Matter and Energy Flow Chart
Include:
All materials and the amounts of each
A plant
An animal
All terms
Where energy is stored
Where energy is released/ reused
Draw your own chart of matter and energy flow.