Cellular Energy Catalyst: What does ATP stand for? Describe what cells need ATP for. What type...

Cellular Energy

Catalyst: What does ATP stand for? Describe what cells need ATP for.

What type of energy is ATP? Describe where the energy in ATP

is stored. Explain how the energy in ATP can

be released.

Write in complete sentences!Don’t talk during the Catalyst!

Agenda

Be all that you can be. Is it worth it? Let me work it – Using ATP!

REVIEW! Photosynthesis BRAIN GAIN EQ

Announcements

Homework: Complete worksheet from today

Unit Test: THURSDAY

Progress Report grades are in the computer.

ObjectivesWRITE THESE AT THE TOP OF YOUR NOTES

By the end of today, SWBAT…Write the balanced equation for photosynthesis

Explain the role of water, carbon dioxide, sugar, and sunlight in photosynthesis

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 want Cells need ATP to grow, Muscle cells need ATP to

contract, Brain cells need ATP to think, etc.

How ATP Works

ATP = adenosine triphosphate The energy of ATP is stored in the bonds of the phosphate moleculesChemical energy = energy stored in chemical bonds

Break off the last phosphate, and energy is releasedBecomes ADP

PHOTOSYNTHPHOTOSYNTHESIS!ESIS!

Chemical Reactions

Key Point #1: Chemical reactions REARRANGE reactants into products. Reactants = Materials you START with

in a chemical reaction. Products = Materials you FINISH with

in a chemical reaction.

Photosynthesis is a specific chemical reaction that, using energy from the sun, rearranges its reactants into its products.

PHOTOSYNTHESIS

is a CHEMICAL

REACTION

Photosynthesis

Key Point #2: Photosynthesis converts solar energy from the Sun into chemical energy in glucose. Glucose = a type of sugar Happens in the chloroplasts Plant cells only

The Equation

What do plants need to grow? Water, carbon dioxide, sunlight

What is made by photosynthesis? Glucose

The Equation

Key Point #3: 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

Unbalanced

CO2 + H2O + sun C6H12O6 + O2

BALANCED!BALANCED!

6CO2 + 6H2O + sun C6H12O6 + 6O2

REACTANTS PRODUCTS

Practice

Groups.White boards.60 seconds.

Practice

Why do cells need energy?

Practice

Cells use energy in the form of

______.

Practice

What type of energy does ATP

have?

Practice

Where is the energy in ATP

stored?

Practice

How is the energy in ATP released?

Practice

What happens in photosynthesis?

(Sum it up.)

Practice

Where does photosynthesis

occur?

Practice

What type of cells do

photosynthesis?

Practice

Where does photosynthesis

occur?

Practice

Why can’t cells stop after

photosynthesis, and just use

sugar for energy?

Independent Practice

Work hard,get smart.

Photosynthesis Key Point Wrap-Up Key Point #1: Chemical reactions

REARRANGE reactants into products.

Key Point #2: Photosynthesis converts solar energy from the sun into chemical energy in glucose.

Key Point #3: The reactants of photosynthesis are carbon dioxide, water, and sunlight. The products are glucose and oxygen.

Exit Questions

Below is the unbalanced equation for photosynthesis. Balance it. CO2 + H2O + sunlight C6H12O6 + O2

What are the reactants in photosynthesis?

What are the products in photosynthesis?Write in complete sentences!

Don’t talk during the Exit Question!