Basics

CO₂ + H₂O + Light

CHO + H₂O + O₂

Photosynthesis is

Anorobic

Edergonic

Endothermic

-S

Importance of Photosynthesis

main source of organic molecules

sustain all life forms

,main source of oxygen

Cuticle of a Leaf

Doesn’t allow molecules to easily pass, protects plant from losing water

Xylem of a Leaf

Transports water and minerals

Pholem of Leaf

transports sugars

Stoma (little pair of pores)

CO₂ enters and O₂ exits

Chloroplast Stroma

Calvin Reactions

Chloroplast Thylakoid

Light Reactions

Electromagnetic Spectrum

Visible light= optimal level for photosynthesis

Visible Light is safer than

UV, XRays, Gamma Waves

Visible Light is stronger than

Infrared, Radio, Microwaves

We use light energy to

exite e- in the reaction center part of electromagnetic spectrum

Absorbtion Spectrum

range of wavelenghts absorbed by PHOTOSYNTHIC PIGMENTS

Action Spectrum

range of wavelenghts effective for PHOTOSYNTHESIS

Photosystem has

1.) Light Harvesting Complex

2.) Reaction Center

3.) Primary Electron Acceptor

1.) Light Harvesting Complex

proteins + photosynthetic pigments

2.) Reaction Center

specialized chlorophyl

Respiration V Photosynthesis: Purpose

Glucose→ATP v Light→Glucose

Respiration V Photosynthesis: Equation

CHO + O→CO2 + H2O +ATP v CO2 + H2O + Light→CHO + O2

Respiration V Photosynthesis: Location

mitochondria v chloroplast

Respiration V Photosynthesis: Electron Carrier

FADH, NADH v NADPH

Respiration V Photosynthesis: ATP Production

Oxidative v Photophos