PHOTOSYNTHESIS: OVERALL REACTION 6CO 2 + 6H 2 0 C 6 H 12 O 6 + 6O 2 Light, Chlorophyll.

Slides:

Advertisements

Similar presentations

An Overview of Photosynthesis Most of the energy used by almost all living cells ultimately comes from the sun  plants, algae, and some bacteria capture.

Advertisements

Capturing Light Energy and the Electromagnetic Spectrum.

Photosynthesis. Photosynthesis in Overview Process by which plants and other autotrophs store the energy of sunlight into sugars. Requires sunlight, water,

Photosynthesis: Capturing Energy

Bio 178 Lecture 18 Photosynthesis

Light Reactions of Photosynthesis

Photosynthesis Schreiber Honors Biology. Who does it?? Photoautotrophs Plants Algae Protists Bacteria **In Plants Primarily Leaves Mesophyll/ Parenchyma.

Chapter 2 Life Science. Plant Cell Plants are autotrophs – they make their own food. Plants are autotrophs – they make their own food. They use the process.

Photosynthesis Photosynthesis: process that converts atmospheric CO 2 and H 2 O to carbohydrates Solar energy is captured in chemical form as ATP and NADPH.

Photosynthesis. 1. An Overview of Photosynthesis & Respiration 2. Autotrophs and producers 3. Electromagnetic Spectrum & light energy 4. Chloroplasts:

Photosynthesis. Overview All energy on earth comes from the sun. We depend on: –Plants –Algae (underwater plants) –Cyanobacteria (photosynthetic bacteria)

Photosynthesis Process in which light energy is used to drive the conversion of CO 2 to carbohydrate. 6H 2 O* + 6CO 2 C 6 H 12 O 6 + 6O 2 * light.

PHOTOSYNTHESIS * Photons to energy CO2 fixation Z-scheme Calvin Cycle

THE SHORT STORY OF PHOTOSYNTHESIS:

1 This is Jeopardy Photosynthesis 2 Categor y No. 1 Categor y No. 2 Categor y No. 3 Categor y No. 4 Categor y No Final Jeopardy.

CHAPTER 10 Photosynthesis. Sunlight as an Ultimate Energy Source All living things need energy Photosynthesis provides this energy  Converts light energy.

Photosynthesis. Photosynthesis in Overview Process by which plants and other autotrophs store the energy of sunlight into sugars. Requires sunlight, water,

Photosynthesis.

PHOTOSYNTHESIS Do Now: What is an autotroph?

How Photosynthesis Works

Photosynthesis.

Energy and Photosynthesis What is Energy? – Ability to do work…..ughh… Kinetic Energy? – Energy in Action –Examples Potential Energy? – Stored Energy –Examples.

Photosynthesis. 1. Mesophyll A layer of cells that contain & are responsible for most of the plant’s photosynthesis chloroplasts Page 2.

Photosynthesis. Ecological Significance  Photosynthesis- the process that converts light energy to chemical energy  Autotrophs- “self + feeders” 

PHOTOSYNTHESIS Class Notes. PHOTOSYNTHESIS F Photosynthesis is ability of a plant to turn sunlight, air, and water into sugar (energy). F The overall.

Energy can be transformed from one form to another FREE ENERGY (available for work) vs. HEAT (not available for work)

QOD - _______ is a membrane system found within the chloroplast, that are a flat, disc shaped structure.

Photosynthesis Overview 6 CO 2 (g) + 6 H 2 O(I) + light energy  C 6 H 12 O 6 (aq) + 6 O 2 (g)

1 10 pt 15 pt 20 pt 5 pt 10 pt 15 pt 20 pt 5 pt 10 pt 15 pt 20 pt 5 pt General Structures and Processes Products Review the main concepts of photosynthesis.

Photosynthesis Converts sunlight energy into chemical energy.

Photosynthesis. Photosynthesis in Overview Process by which plants and other autotrophs store the energy of sunlight into sugars. Requires sunlight, water,

Chapter 5 part 1 Photosynthesis. Energy in living systems -photosynthesis: the process of converting light energy into chemical energy -Autotrophs: make.

Photosynthesis. Energy & Life Photosynthesis is the process of capturing and transforming the energy of sunlight into chemical energy. (What type of organisms.

Photosynthesis  Earliest life forms survived by metabolizing high-energy inorganic molecules  About 3 billion years ago, some primitive organisms evolved.

Photosynthesis, the light reaction

4.1-Capturing Solar Energy: Light Dependent Reactions

Photosynthesis The light reactions.

II. The light reactions of photosynthesis

Photosynthesis Conversion of light energy from the sun into chemical energy to make sugar.

Photosynthesis Overview  Only 5% of the light that hits earth's surface is converted to organic compounds by photosynthesis. 6 CO 2 (g) + 6 H 2 O(I) +

7.5 Overview: The two stages of photosynthesis are linked by ATP and NADPH  The second stage is the Calvin cycle, which occurs in the stroma of the chloroplast.

 Homework Reminder: Due Thurs., Nov. 12, 2015 Read pages Answer Ch. 8 objectives (1,3,5,9)  Do Now: How does the chloroplast’s structure determine.

Photosynthesis.

Photosynthesis.

SL Topic 2.8 Photosynthesis.

KEY CONCEPT Photosynthesis produces glucose that stores chemical energy.

PHOTOSYNTHESIS Class Notes.

Photosynthesis process by which plants, algae and some bacteria use light energy to convert inorganic compounds into organic compounds.

Chloroplasts Chromoplasts Leucoplasts Plastids

4.7 Photosynthesis Overview

Photosynthesis 4.3.

Storing Energy from the Sun: Photosynthesis

Warm Up What are the relationship between CELLULAR RESPIRATION and PHOTOSYNTHESIS? CELLULAR RESPIRATION – the splitting apart of glucose by water to produce.

Photosynthesis overview

CH21 part2 生科3A B983B0002 翁梨馨 B983B0044 楊濟鴻.

PHOTOSYNTHESIS.

Photosynthetic organisms are producers.

Photosynthesis.

Harvesting Light Energy

Photosynthetic organisms are producers.

Photosynthesis.

Photosynthesis.

Photosynthesis.

PHOTOSYNTHESIS: Converting solar energy into chemical energy (SUGARS).

Photosynthesis.

Photosynthesis.

PHOTOSYNTHESIS Class Notes.

Photosynthesis.

8.2 Photosynthesis: An Overview

PHOTOSYNTHESIS Class Notes.

Presentation transcript:

PHOTOSYNTHESIS: OVERALL REACTION 6CO 2 + 6H 2 0 C 6 H 12 O 6 + 6O 2 Light, Chlorophyll

PHOTOSYNTHESIS: LIGHT REACTIONS VS. DARK REACTIONS THE FUNCTION OF THE LIGHT REACTIONS IS TO CONVERT SUNLIGHT INTO CHEMICAL ENERGY (ATP AND NADPH). THE DARK REACTIONS FIX CO 2 INTO SUGARS, USING THE ATP AND NADPH GENERATED BY THE DARK REACTIONS.

LIGHT HAS CHARACTERISTICS OF BOTH A PARTICLE AND A WAVE A WAVE IS CHARACTERIZED BY A WAVELENGTH AND A FREQUENCY c =

LIGHT IS ALSO A PARTICLE WHICH WE CALL A PHOTON  EACH PHOTON CONTAINS AN AMOUNT OF ENERGY CALLED A QUANTUM.  THE ENERGY CONTENT OF LIGHT IS NOT CONTINUOUS, BUT IS DELIVERED IN DISCREET PACKETS OR QUANTA.  E = h, where h is Planck’s constant

Bacteriochlorophyll a Chlorophyll a Phycoerythrobilin  -carotene Chlorophyll b

ENGELMANN EXPERIMENT (1881)

PHOTOSYNTHESIS TAKES PLACE IN COMPLEXES CONTAINING LIGHT- HARVESTING ANTENNAS AND PHOTOCHEMICAL REACTION CENTERS

EMERSON AND ARNOLD’S FLASHING LIGHT EXPERIMENTS WITH CHLORELLA (1932) 1. Gave brief flashes (10 -5 s) of light to Chlorella suspension and measured the amount of O 2 produced. (The flashes were spaced 0.1 s apart for maximum efficiency of dark reaction.) 2. Varied intensity (light energy) of flash and plotted the O 2 produced per flash versus the flash energy (number of photons).

 QUANTUM YIELD = 0.1

RED DROP EFFECT Carotenoid absorption: carotenoids have photoprotective effect

EMERSON ENHANCEMENT EFFECT

Stroma lamellae Double membrane Grana stack (thylakoids) Stroma

PSII PSI

Antenna complex as energy funnel

LHCII Antenna Complex ~15 LHCII PROTEIN

PSI

CHEMIOSMOTIC MECHANISM