Photosynthesis: Capturing Energy

Slides:

Advertisements

Similar presentations

Concept 8.1: Photosynthesis uses light energy to make food

Advertisements

PHOTOSYNTHESIS Autotrophic Process: Plants and plant-like organisms make their energy (glucose) from sunlight. Stored as carbohydrate in their bodies.

PHOTOSYNTHESIS Honors Biology Ch. 6.

Photosynthesis AP Biology Unit 4.

PHOTOSYNTHESIS.

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

PHOTOSYNTHESIS.

PHOTOSYNTHESIS Autotrophic Process: Plants and plant-like organisms make their energy (glucose) from sunlight. Stored as carbohydrate in their bodies.

Photosynthesis Chapter 8. Photosynthesis  Reaction  6CO 2 + 6H light = C 6 H 12 O 6 + 6O 2  Photosynthesis uses energy from the sun to convert.

PHOTOSYNTHESIS. PHOTOSYNTHESIS KEY CONCEPT Photosynthesis is a series of chemical reactions that transform light energy into chemical energy stored.

Warm – Up  Stomata-small openings in leaves that allow gases and water to diffuse into and out of the leaf  Guard cells – special cells that surround.

Chapter 8 Section 2 - Photosynthesis

Bellringer – September 23, ) Draw the following leaf and fill in the blanks for the 5 arrows. 2) In what organelle does photosynthesis take place?

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

PHOTOSYNTHESIS USES LIGHT ENERGY TO MAKE FOOD

Cell Energy  Why do cells need energy?  How can cells store energy?  A molecule called adenosine triphosphate  ATP Energy is stored in ________________.

THE BASICS OF PHOTOSYNTHESIS

Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar.

Chapter 9 Photosynthesis “Sunshine splits apart the carbon dioxide that a plant has absorbed from the air, the plant throws out at that time the oxygen.

How Photosynthesis Works

Photosynthesis.

Trapping Light Energy to Build Carbohydrates

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

Cellular Energy: Photosynthesis.

Photosynthesis Chapter 6. Carbon and Energy Sources Photoautotrophs Carbon source is carbon dioxide Energy source is sunlight Heterotrophs Get carbon.

Photosynthesis Chapter 7.

Photosynthesis.

Photosynthesis.

Photosynthesis.

PHOTOSYNTHESIS USES LIGHT ENERGY TO MAKE FOOD. PHOTOSYNTHESIS Process that converts light energy to chemical energy Occurs in chloroplasts of green plants.

What is Photosynthesis?

Overview: Energy from light is used to convert CO 2, H 2 O into sugar O 2 is a byproduct or “leftover” and is released Photosynthesis: In: 6CO 2 + 6H.

PHOTOSYNTHESIS Chapter 6

The overall process of photosynthesis produces sugars that store chemical energy. 6CO2 + 6H2O  C6H12O6 + 6O2.

Photosynthetic organisms are producers.

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

Chloroplast ► Organelle where photosynthesis takes place ► Contain chemical compounds called: Chlorophyll.

PHOTOSYNTHESIS. Adenosine Triphosphate (ATP) Energy-storing compound Energy-storing compound Made up of an adenosine compound with 3 phosphate groups.

Photosynthesis: Life from Light and Air Energy needs of life  All life needs a constant input of energy  Heterotrophs (Animals)  get their energy.

Photosynthesis Biology 2 D. Mitchell. . All life requires energy All life requires energy Almost all energy for life is derived from the sun. Almost all.

4.2 Overview of Photosynthesis KEY CONCEPT The overall process of photosynthesis produces sugars that store chemical energy.

Ch. 7 Photosynthesis Using Light to Make Food

THE BASICS OF PHOTOSYNTHESIS

Photosynthesis Strategy for survival to obtain energy to do work used by plants, protists, and some bacteria! Def: process of obtaining energy from the.

Energy needs of life All life needs a constant input of energy –Heterotrophs (Consume) get their energy from “eating others” –eat food = other organisms.

INSIDE THE LEAF OF THE PLANT… INSIDE THE CELLS OF THE LEAF… INSIDE THE CHLOROPLASTS OF THE CELLS… 6CO 2 + 6H 2 O (+ light energy) → C 6 H 12 O 6 + 6O 2.

Photosynthesis (Ch. 8) 1. ATP (for energy!) ATP = adenosine triphosphate ATP is the molecule that DIRECTLY provides energy to do cellular work Chemical.

PHOTOSYNTHESIS. Energy Stored in chemical bonds of compounds. Compounds that store energy: ATP, and NADPH. When bonds are broken, energy is released.

4.2 Overview of Photosynthesis TEKS 4B, 9B The student is expected to: 4B investigate and explain cellular processes, including homeostasis, energy conversions,

Photosynthesis ► A naturally occurring biological process ► Very complex ► It is an endogenic, anabolic reaction resulting in the production of glucose.

The process of plants using the energy of sunlight to convert water and carbon dioxide into high energy sugars and oxygen. 6 CO 2 + 6H 2 O + Light energy.

Bellringer – 9/23/14 1) Draw the following leaf and fill in the blanks for the 5 arrows. 2) In what organelle does photosynthesis take place? 3) Try and.

 The chlorophyll may be broken down by the cooling temperatures or the changing light, so the green color disappears.  A leaf then shows the color.

THE BASICS OF PHOTOSYNTHESIS

PHOTOSYNTHESIS Autotrophic Process: Plants and plant-like organisms make their energy (glucose) from sunlight. Stored as carbohydrate in their bodies.

‘The light at the end of the tunnel’

Photosynthesis.

Trapping Light Energy to Build Carbohydrates

4.7 Photosynthesis Overview

Cell Energy: Photosynthesis

11/14/2018 Photosynthesis.

Photosynthesis.

Photosynthesis A naturally occurring biological process Very complex

Remember! In order to carry out cellular processes, cells need ENERGY.

Photosynthetic organisms are producers.

Photosynthetic organisms are producers.

PHOTOSYNTHESIS Autotrophic Process: Plants and plant-like organisms make their energy (glucose) from sunlight. Stored as carbohydrate in their bodies.

Photosynthesis The process of producing the organic molecule Needed for cellular respiration.

8.2 Photosynthesis: An Overview

THE BASICS OF PHOTOSYNTHESIS

Presentation transcript:

Photosynthesis: Capturing Energy Chapter 8 Photosynthesis: Capturing Energy

Photosynthesis is the process by which plants, some bacteria, and some protists use the energy from sunlight to produce sugar. Cellular respiration then converts sugar into ATP, the "fuel" used by all living things.

Photosynthesis Conversion of light energy to chemical bond energy Associated with the green pigment, chlorophyll Equation:

Plants Plants are the only photosynthetic organisms that have leaves. A leaf is basically a solar collector full of photosynthetic cells.

Leaves Water enters the root and is transported up to the leaves through specialized plant cells known as xylem. Land plants (which risk drying out) have structures called stomata that allow for gas exchange. However, while open, water still escapes.

Leaf Structure

Leaf Stomata http://upload.wikimedia.org/wikipedia/commons/thumb/0/09/Tomato_leaf_stomate_1-color.jpg/300px-Tomato_leaf_stomate_1-color.jpg

Light Light is composed of small particles that travel as waves Radiation varies in wavelength Red – longer wavelengths Violet – shorter wavelengths

Light Light can also behave as particles Photons – packets of energy When a molecule absorbs a photon of light energy, one electron is energized

Chlorophyll Chlorophyll is a pigment Pigment is any substance that absorbs light. Chlorophyll – green pigment common to all photosynthetic cells Color is from the wavelength of light reflected Different types of chlorophyll Accessory pigments – absorb different wavelengths of light

Pigments All photosynthetic organisms have chlorophyll a Chlorophyll a absorbs its energy from Violet-Blue and Red-Orange wavelengths Green/Yellow is reflected Accessory pigments: chlorophyll b, carotenoids – absorb other wavelengths

Chloroplasts Have a double membrane Inner membrane encloses the stroma (area between membranes) Thylakoids are a third set of membranes enclosing the thylakoid interior space Stacks of thylakoids = grana Chlorophyll and other pigments located in the thylakoid membranes

Prokaryotes lack chloroplasts Thylakoids are still present, but without chloroplast structures Thylakoid membranes are formed from infoldings of the plasma membrane

Photosynthesis Divided into 2 reactions: Light Dependent Reactions - thylakoid Carbon fixation/Calvin Cycle (Light Independent) – stroma

Light-Dependent Reactions Light excites the electrons in chlorophyll a to a higher energy state In a series of reactions the energy is converted (along an electron transport process) into ATP and NADPH. Water is split in the process, releasing oxygen as a by-product of the reaction. The ATP and NADPH are used to make C-C bonds in the Light Independent Process (Dark Reactions)

Calvin Cycle (Light Independent Reactions) Not driven by light Use products from Light Dependent reactions CO2 is captured and modified with the addition of Hydrogen to form carbohydrates