Unit 5 Intro to Photosynthesis

Photosynthesis

The Basis Of Human Food Webs

Oxygen

Photosynthesis produces _____

Oxygen

___ Enables Cellular Respiration In Aerobic Species

Ozone

Photosynthesis Produces Oxygen (O2) To Form _____

The Ozone Layer -

• Captures Ultra-Violet (UV) Photons In Sunlight

• Enables Life To Exist In Shallow Waters & Terrestrial Habitats

• Prevents Lethal DNA Mutations

Plants

_____ Provide ~25% Of All Prescribed Pharmaceuticals

• Plants Convert The Carbohydrates Produced By Photosynthesis Into Defensive Molecules With Medicinal Value

• Pharmacognosy Is The Study Of Pharmaceuticals From Plants

2

Photosynthesis Consists Of ____ Sets Of Reactions

These Reactions Occur In The Chloroplasts Of Algae & Plants -

• Light-Dependent Reactions In

Thylakoid Membranes

• Calvin Cycle Reactions In The

Stroma

Photosynthesis

Plant Anatomy & Physiology Ensure That Leaves Receive All The Reagents For ____

Thylakoid Membrane

The Light-Dependent Reactions Occur In The _____ _____

 Convert Sunlight Into ATP & NADPH Molecules That Energize The Calvin Cycle Enzymes That Convert CO2 To Carbohydrate

 Split Water (H2O) To Produce Electrons. (e-), Hydrogen Ions (H+), And Oxygen (O2)

Photosynthetically Active Radiation (PAR)

_____ _____ _____ Energizes The Light-Dependent Reactions

• PAR is also visible light

Carotenoid, Chlorophyll

____ & _____ Pigments Absorb PAR

Calvin Cycle

The ____ _____Enzymes Convert CO2Into The 3-Carbon Carbohydrate, Glyceraldehyde 3-Phosphate (G3P/PGAL)

 ATP & NADPH Energize The Calvin Cycle

Enzymes

• Plants Use PGAL To Make All Their Biological Molecules

Molecular building block of life

Glyceraldehyde 3-Phosphate (PGAL / G3P) Is The -

All Your Biological Molecules Can Be Traced To PGAL

Molecules Produced By The Calvin Cycle