Embed Size (px)
DESCRIPTION
Cellular Energy. Catalyst: What is energy? What does a plant need energy for? A lion? A bacterium?. Write in complete sentences! Don’t talk during the Catalyst!. Objectives. By the end of today, SWBAT… Explain how the cell uses ATP - PowerPoint PPT Presentation
Citation preview
Cellular Energy
Catalyst: What is energy? What does a plant need energy for? A lion? A bacterium?
Write in complete sentences!
Don’t talk during the Catalyst!
Objectives
By the end of today, SWBAT…Explain how the cell uses ATP
Use the equations for photosynthesis and cell respiration to analyze their relationship
Agenda
CatalystATPPhotosynthesis & Cellular Respiration
Notes ReflectionExit Question/HW
Catalyst Review
What is energy?What does a plant need energy for? A lion? A bacterium?
All living things need energy to live their lives!!!!!
Cellular Energy
Key Point #1: Cells need energy in the form of ATP to do work. If energy is not in the form of ATP,
then it must be changed into ATP before a cell can use it
ATP is the form of energy that lets cells do what they wantCells need ATP to growMuscle cells need ATP to contractBrain cells need ATP to thinkEtc.
How ATP Works
ATP = adenosine triphosphate The energy of ATP is stored in the bonds of the phosphate molecules.
Chemical energy = energy stored in bonds How do cells use
ATP? Energy stored in
bonds Break off the last
phosphate, and energy is released
Remember…
ATP is like a fully charged battery, while ADP is like a half charged battery.
Photosynthesis Reaction
What do plants need to grow? Water, air (carbon dioxide), and sun
What is made by photosynthesis? Sugar, oxygen
Key Point #2: The reactants of photosynthesis are carbon dioxide, water, and sunlight. The products are glucose and oxygen. Carbon dioxide = CO2
Water = H2O Glucose = C6H12O6
Oxygen = O2
Chemical Reactions—Photosynthesis
Chemical reactions rearrange the starting materials (reactants) into finished materials (products). What you need = reactions What you make = products
Photosynthesis is a specific chemical reaction that, using energy from the sun, rearranges its reactants into its products.
Happens in the chloroplasts of plant cells only.
Unbalanced
CO2 + H2O + sun C6H12O6 + O2
Balanced
6CO2 + 6H2O + sun C6H12O6 + 6O2
REACTANTS PRODUCTS
Cellular Respiration
Key Point #3: Cellular respiration converts glucose (sugar) and oxygen and turns it into carbon dioxide, water, and ATP. Just like photosynthesis, there’s an equation
for cellular respiration…
C6H12O6+ 6O2 6CO2+ 6H2O+ ATP
REACTANTS PRODUCTS
Chemical Reactions—Cellular Respiration Cellular respiration is a specific chemical
reaction that, using the energy in the sugar glucose, rearranges its reactants into its products.
Makes ATP (energy for the cell!) Happens in the mitochondria of
plants and animals.
SUGARATP
ATP
ATP
ATP
What Do You Notice…?
Photosynthesis:
6CO2 + 6H2O + sun C6H12O6 + 6O2
Cellular respiration:
C6H12O6 + 6O2 6CO2 + 6H2O + ATP
Opposites!
Key Point #4: Photosynthesis and cellular respiration are opposites. The reactants in photosynthesis are the products of cellular respiration.
The reactants in cellular respiration are the products of photosynthesis.
SEE!!!
Photosynthesis:
6CO2 + 6H2O + sun C6H12O6 + 6O2
Cellular respiration:
C6H12O6 + 6O2 6CO2 + 6H2O + ATP
Notes Reflection (GP)
Look back through your notes to find the answer. If you can’t find the answer quickly in your notes, we need to work on note-taking skills.
Why do cells need energy?
Notes Reflection (GP)
Look back through your notes to find the answer. If you can’t find the answer quickly in your notes, we need to work on note-taking skills.
Can cells use glucose for energy directly?
Notes Reflection (GP)
Look back through your notes to find the answer. If you can’t find the answer quickly in your notes, we need to work on note-taking skills.
Cells use energy in the form of _______.
Notes Reflection (GP)
Look back through your notes to find the answer. If you can’t find the answer quickly in your notes, we need to work on note-taking skills.
What type of energy does ATP have?
Notes Reflection (GP)
Look back through your notes to find the answer. If you can’t find the answer quickly in your notes, we need to work on note-taking skills.
Where is the energy in ATP stored?
Notes Reflection (GP)
Look back through your notes to find the answer. If you can’t find the answer quickly in your notes, we need to work on note-taking skills.
How is the energy in ATP released?
Notes Reflection (GP)
Look back through your notes to find the answer. If you can’t find the answer quickly in your notes, we need to work on note-taking skills.
What happens in photosynthesis?
Notes Reflection (GP)
Look back through your notes to find the answer. If you can’t find the answer quickly in your notes, we need to work on note-taking skills.
Where does photosynthesis occur?
Notes Reflection (GP)
Look back through your notes to find the answer. If you can’t find the answer quickly in your notes, we need to work on note-taking skills.
What happens in cellular respiration?
Notes Reflection (GP)
Look back through your notes to find the answer. If you can’t find the answer quickly in your notes, we need to work on note-taking skills.
Where does cellular respiration occur?
Notes Reflection (GP)
Look back through your notes to find the answer. If you can’t find the answer quickly in your notes, we need to work on note-taking skills.
Why can’t cells stop after photosynthesis, and just
use sugar for energy?
Cell Energy Flow Charts
Cut out the squares. Write the name (in English) of each
square under its chemical symbol. Organize the squares into the equation
for photosynthesis. Balance it!!! Decorate the REACTANT squares in
warm colors (red, yellow, orange) Decorate the PRODUCT squares in
cool colors (blue, green, purple)
Independent Practice/Homework
Let’s go!
Exit Questions
What kind of energy is stored in ATP?
What is the process that uses carbon dioxide and water to make glucose?
What is the process that creates ATP?
Write in complete sentences!
Don’t talk during the Exit Question!
