Photosynthesis CR Identify the reactants products and basic

Photosynthesis & CR Identify the reactants, products, and basic functions of photosynthesis. EQ: How is energy acquired and used by organisms? Regents Biology

Meet Penny… Penny is Claudel's best friend What kinds of cells are Penny and Claudel? What are three things Penny has that Claudel does not have? Why? Regents Biology

plant cells animal cells Regents Biology

Plants are energy producers Like animals, plants need energy to live unlike animals, plants don’t need to eat food to make that energy Plants Regents Biology make both FOOD & ENERGY

How do plants make energy & food? Plants to use the energy from the sun make ATP energy and sugars (glucose, sucrose, cellulose, & more) sun ATP sugars Regents Biology

Photosynthesis A process where light energy is captured and used to build SUGARS from carbon dioxide and water Occurs Regents Biology in the Chloroplasts

REVIEW!!!! Photosynthesis is a chemical reaction. . What are the parts of a chemical reaction? Reactant Products Regents Biology goes in – comes out

Photosynthesis Equation carbon dioxide 6 CO 2 + water + + 6 H 2 O + (ATP) = used to build the sugar sun energy glucose + oxygen C 6 H 12 O 6 What are the reactants? Box them Co 2, H 2 O, sunlight What are the products? Circle them Regents Biology C 6 H 12 O 6, O 2 + 6 O 2

Chloroplast Thykaloid Chlorophyll Water Sugar Carbon Dioxide Regents Biology ATP Light independent ATP Energy Oxygen Light dependent Sunlight

Light- Dependent & Independent Reactions: Light- Dependent reactions 1. Chlorophyll in the thylakoid absorbs energy from sunlight 2. Water molecules taken in from the roots are broken down and Oxygen is released Light- Independent reactions 1. No sunlight energy required 2. Uses ATP from the light dependent reaction and Carbon Dioxide (CO 2) absorbed through the leaf and to produce sugar Regents Biology

Regents Biology

What do plants need to grow? Location of Photosynthesis: chloroplast Fuels: sunlight carbon dioxide water The CO 2 Helpers: ATP enzymes Products: Oxygen sugar Regents Biology Make ATP! Make sugar! I can do it all… And no one even notices! H 2 O sugars

What Affects the rate of photosynthesis? Photosynthesis is a chemical reaction Photosynthesis has help from enzymes… What factors affect enzyme activity? Temp, p. H, & concentration What factor can affect the rate of photosynthesis? TEMPERATURE!!! ………. . Closer to the optimum temperature, rate of photosynthesis increases due to enzymes! Regents Biology

So what does a plant need? Bring In (reactants) Energy Light from the sun (leaves) CO 2 from the air (leaves) H 2 O from the ground (roots) Lets Out (products) O 2 (escapes from the leaves) Sugars (food for the plant) Review: How does the water get from the roots of the plant to the leaves of the plant for photosynthesis? Regents Biology

QKAQKA in your notebook (pg 35) The 'light-dependent reactions', or light reactions, are the first stage of photosynthesis, the process by which plants capture and store energy from sunlight. The lightdependent reactions take place on the thylakoid membrane inside a chloroplast. The inside of the thylakoid membrane is called the lumen, and outside thylakoid membrane is the stroma, where the light-independent reactions take place. The synthesis of carbohydrates occurs in the stroma of chloroplasts. This process uses what reactants to create carbohydrates? A. H 2 O & CO 2 C. C 6 H 12 O 6 B. CO 2 & O 2 D. O 2 Regents Biology

QKAQKA on the right side of your notebook (pg 35) According to the graph, what is the best explanation for the relationship between temperature and the rate of photosynthesis? A. As the temperature increases the rate of photosynthesis continually increases B. As the temperature increases the rate of photosynthesis continually decreases C. As the temperature increases the rate of photosynthesis stays the same. D. As temperature increases the rate of photosynthesis increases and then decreases. Regents Biology

HOW WOULD PHOTOSYNTHESIS BE AFFECTED IF…. . There was a drought… There were less hours of sunlight than normal…. The carbon dioxide levels in the atmosphere dropped… Drastic change in temperature…

One plant says to another, “Are you hungry? ”… The other replies, “I could use a light snack. ”

Ed Puzzle: Photosynthesis Go to edpuzzle. com Log into Ed puzzle using the account you created Complete Regents Biology the photosynthesis Ed Puzzle