Chapter 5 Photosynthesis & Cellular Respiration

Energy & Living Systems Must Knows

1. Analyze the flow of ENERGY through living systems.– P _____

2. Compare & Contrast AUTOTROPHS and HETEROTROPHS.

– P_____

3. Describe the role of ATP in living organisms– P____

4. Explain how ENERGY is released from ATP– P____

Energy in Living Systems

• List as MANY forms of ENERGY as you can!

Flow of Energy Through a System

• Do you recall METABOLISM????– Metabolism is the sum of ALL chemical processes

in an organism!

• Organisms are classified in two categories.1. They create their OWN energy2. They have to EAT to gain energy

Autotrophs & Heterotrophs

• Autotrophs– Create their OWN

energy– Most create energy from

sunlight, some can create energy from INORGANIC chemicals

• Heterotrophs– Have to EAT to get their

energy– Must create energy

through CELLULAR RESPIRATION

What is ATP? How does it work?

• ATP is energy for the cell• It is created from GLUCOSE

ATP

• ATP releases energy by breaking a phosphate group and becoming ADP.

Photosynthesis Must Knows1. Explain how energy is captured and released from

the sun.– P _____

2. Explain the function of an ELECTRON TRANSPORT CHAIN.

– P_____

3. Explain how NRG is produced through the CALVIN CYCLE.

– P____

4. Identify THREE factors that affect PHOTOSYNTHESIS– P____

Question for Thought?

• Why do leaves change colors?

Photosynthesis

Chloroplast p 99

Chloroplast

• Photosynthesis takes place in the CHLOROPLAST of plants– Inside the CHLOROPLAST are THYLAKOIDS– THYLAKOIDS is where ENERGY is captured

Photosynthesis

• Photosynthesis occurs in THREE stagesStage 1 – NRG captured from sunlight

Stage 2 – Light NRG is converted to Chemical NRG LIGHT Dependant

Stage 3 – Chemical NRG is used to create organic compoundsLIGHT Independant

Stage 1 – NRG from Sun

• Pigments are substances that absorb light. Pigments absorb some colors and reflect all others. You see the color that is REFLECTED

Stage 2 Electron Transport Chains - ETC

• Electron Transport Chains are used to convert Light to Chemical NRG

Stage 3 – Calvin Cycle – Light Independent

ChloropIast

CO2 Enters the Cycle

Energy Input

5-CarbonMoleculesRegenerated

Sugars and other compounds

6-Carbon SugarProduced

Chemical Equation for Photosynthesis

6CO2 + 6H2O + Energy = C6H12O6 + 6O2

Does this look familiar?

Energy & Living Systems Must Knows

1. Summerize how ATP is created from GLUCOSE.– P _____

2. Explain the role of FERMENTATION. – P_____

3. Describe the role of OXYGEN in AEROBIC RESPIRATION

– P____

Opener p ___

• Describe the function of Cellular Respiration.– Anaerobic vs. Aerobic?

• Describe the function of Photosynthesis.

• How could the two work together???

Poster Assessment – Cell Respiration & Photosynthesis

Photosynthesis (3 Parts)1-Sunlight2-Chemical3-Carbohydrates & O2

Cellular Respiration4-Glycolosis

5-Anaerobic - Lactic Acid6-Aerobic – Krebs Cycle,

36 ATPCO2