LS 2 Lecture 6

LS 2 Lecture 6 - 1 Life Sciences 2 Photosynthesis Chapter...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 Life Sciences 2 Photosynthesis Chapter 10 Dr. Joseph Esdin Photosynthesis • The biochemical process by which plants convert light energy into chemical energy • It is the very basis of life on Earth • Its chemical reaction is – 6 CO 2 + 12 H 2 O -> C 6 H 12 O 6 + 6 O 2 + 6 H 2 O 2 Photosynthetic Organisms Plants Purple sulfur bacteria Alga Protist Cyanobacteria What is Light? • Light is a form of energy known as electromagnetic radiation • Travels in rhythmic waves 3 What is Light? • The waves that can be detected by the human eye in various colors is called visible light • When light meets matter it may be – Reflected – Transmitted – Absorbed Reflected light Absorbed light Light Chloroplast Transmitted light Light Meets Matter 4 Photons • Light consists of discrete particles called photons • Each photon has a fixed amount of energy Photons • When a photon reaches a molecule – Photon may be reflected – Photon may pass through – Photon my be absorbed • If absorbed, the pigment will acquire the energy of the photon – Molecule moves from the ground state to the excited state 5 Photons • Acquiring the energy bumps an electron to a higher shell • This makes the electron less attracted to the nucleus and therefore the molecule becomes more...
View Full Document

This note was uploaded on 06/03/2011 for the course LIFE SCIEN 2 taught by Professor Soliman during the Fall '10 term at UCLA.

Page1 / 15

LS 2 Lecture 6 - 1 Life Sciences 2 Photosynthesis Chapter...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online