An Overview of Photosynthesis. The Big Picture All organisms need energy to carry out essential functions (growth, movement, maintenance, repair, reproduction).

Slides:



Advertisements
Similar presentations
Introduction Living organisms require a constant supply of energy. Sun light is the ultimate energy source. Two groups of organisms depend on different.
Advertisements

Photosynthesis. Photosynthesis Photosynthesis is the way that plants make food from sunlight –You take in food which is digested and then transferred.
DAY 1. Photosynthesis Photosynthesis Song Photosynthesis Song.
81. Photosynthesis Uses Light Energy to Make Food Katrina Garibotto.
Unit 5: Plants.  Site of photosynthesis  Leaf cells absorb energy from sunlight through organelles called chloroplasts.  When solar energy is absorbed,
Regents Biology Regents Biology Photosynthesis: Life from Light and Air.
8.1 Overview of Photosynthesis Photosynthesis converts solar energy into chemical energy. Organisms that carry on photosynthesis are called autotrophs.
Photosynthesis (leaf structure)
Photosynthesis and the Leaf. Energy A.The sun is the source of energy for almost all life on Earth B.The sun’s energy is transferred into a useable form.
Mrs. Degl1 Plant Respiration & Photosynthesis Most leaves provide a large surface for the absorption of light energy. Roots are structures specialized.
Chapter 5 - Nutrition Photosynthesis Autotrophic Nutrition  - Organisms manufacture organic compounds (C 6 H 12 O 6 ) from inorganic raw materials.(CO.
Plants General characteristics eukaryotes autotrophs, photosynthetic
Photosynthesis & Cellular Respiration. Characteristics of Plant Cells Cell wall Large vacuole for water storage Contain Chloroplast (carry out photosynthesis!)
Sources of Energy All living things need energy All cells need energy to carry out their functions.
Leaf Structure and Function. Basic functions 1. Photosynthesis: process which plants use the energy from sunlight to produce sugar (for themselves) 2.
Hydrothermal Vent Bacteria that live near hydrothermal vents.
Regents Biology Photosynthesis: Life from Light and Air.
Leaf and Chloroplast Structure. LEAF STRUCTURES:
Warm-Up #9 12/4/12 1) What are the 3 external plant layers? 2) Why are the top two layers clear? 3) What is the purpose of a stomata? 4) What controls.
Photosynthesis Chapter 8.
Regents Biology Regents Biology Photosynthesis: Life from Light and Air.
Photosynthesis Notes Biology Unit 05 Lesson 01. Chemosynthesis  Chemosynthesis uses energy released from chemical reactions to produce food for organisms.
1. Matter and Energy  How they interact with each other and the environment  How they move through the environment 2. Systems  Basic Structure and.
Photosynthesis Turning Light into Life. What is Photosynthesis? Autotrophs convert Sunlight  to Chemical Energy.
Photosynthesis Occurs in plants: Autotrophs. A process in which plants convert light energy from the sun into chemical energy in the form of organic compounds.
Photosynthesis. Energy and Life  Autotroph: organisms that make their own food  Heterotrophs: organisms that obtain energy from the foods they consume.
Flabby Whalefish Blob Fish Hydrothermal Vent Tongue Fish.
A process in which plants convert light energy from the sun into chemical energy in the form of organic compounds (Carbohydrates). Photosynthesis.
Regents Biology Regents Biology Photosynthesis: Life from Light and Air.
What do I need for Biology? BRAIN Pen/Pencil Guided Notes WS ( 2 on front table)
Cellular Nutrition BZ These notes are summaries of the BZ information and the answers are provided, but there is not enough time in class to discuss.
Plants Form and Function. Parts of a Leaf What do these parts do?  Cuticle (waxy layer) and Upper Epidermis  Prevent Water Loss  Palisade Mesophyll.
Introduction to Photosynthesis Main Objectives: 1.Discuss energy flow through living systems 2.Identify the parts of a leaf 3.Outline the process of photosynthesis.
POINT > Define photosynthesis POINT > Define autotroph and heterotroph (again) POINT > Show the equation for photosynthesis POINT > Describe the role.
Energy Comes From Food All living things need energy to function This energy comes from food The ultimate source of energy for al life on earth is the.
Cell Energy Unit Test Review
Nutrition Autotroph Obtaining and processing food to a usable form
L6: Plant Tissues and Organs
Photosynthesis Chapter 8.
Leaf Structure Vascular plants.
Overview of Photosynthesis
Autotrophic Nutrition
Autotrophic Nutrition


How does a plant gain mass?

Aim: Photosynthesis November 12, 2015 Warm-up:
Leaf Anatomy & Physiology The Photosynthesis Way

Remember! In order to carry out cellular processes, cells need ENERGY.
Photosynthesis: Life from Light and Air
3.3 Photosynthesis.
DAY 1 Leaf Structure.
Leaf Structures.
Photosynthesis Mr. Zito.
Autotrophic Nutrition
Photosynthesis The process of producing the organic molecule Needed for cellular respiration.
Photosynthesis.


Photosynthesis AUTOTROPHIC vs. HETEROTROPHIC (makes food) (has to get food)
BIOLOGY Photosynthesis.

Photosynthesis Photosynthesis Song
Photosynthesis Chapter 8.


Photosynthesis: Life from Light and Air
Chapter 6 and Review Photosynthesis.
Presentation transcript:

An Overview of Photosynthesis

The Big Picture All organisms need energy to carry out essential functions (growth, movement, maintenance, repair, reproduction). The ultimate source of energy is the sun. Energy flows from the sun to autotrophs, then to organisms that eat autotrophs (heterotrophs), and then to organisms that feed on other organisms (heterotrophs).

Autotrophs vs. Heterotrophs Organisms are classified by how they obtain their energy Organisms are classified by how they obtain their energy 1. Autotrophs- organisms that make their own food / use solar energy to power the production of food (plants, some kinds of protists and bacteria) (plants, some kinds of protists and bacteria) 2. Heterotrophs- organisms that must get energy from food instead of directly from sunlight / get energy by eating other organisms or organic wastes (all animals, all fungi, most protists, many bacteria) (all animals, all fungi, most protists, many bacteria)

The Six Kingdoms HeterotrophicAutotrophic EubacteriaXX (chemosynthesis or photosynthesis) ArcheabacteriaXX(chemosynthesis) ProtistaX(phagocytosis)X(photosynthesis) FungiX (secrete digestive enzymes into the environment) PlantaeX(photosynthesis) AnimaliaX(phagocytosis)

Autotrophs: Chemosynthesis vs. Photosynthesis Photosynthesis- the conversion of light energy from the sun into chemical energy in the form of organic compounds. Photosynthesis- the conversion of light energy from the sun into chemical energy in the form of organic compounds. 6CO 2 + 6H 2 O + (light energy)  C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + (light energy)  C 6 H 12 O 6 + 6O 2 Chemosynthesis- the use of energy stored in inorganic molecules (CO 2 ) to produce carbohydrates (organic molecules) / chemicals are used as the energy source rather than sunlight Chemosynthesis- the use of energy stored in inorganic molecules (CO 2 ) to produce carbohydrates (organic molecules) / chemicals are used as the energy source rather than sunlight 6CO 2 + 6H 2 O + (chemical energy-3H 2 S)  C 6 H 12 O 6 + 3H 2 SO 4 6CO 2 + 6H 2 O + (chemical energy-3H 2 S)  C 6 H 12 O 6 + 3H 2 SO 4

Which Organisms use Photosynthesis? Which Organisms use Chemosynthesis? Photosynthesis – takes place on land and in shallow waters where sunlight can reach plants and seaweed Photosynthesis – takes place on land and in shallow waters where sunlight can reach plants and seaweed Chemosynthesis – takes place around hydrothermal vents and methane seeps in the deep sea where there is no sunlight. It is performed by bacteria living on the sea floor or within animals. Chemosynthesis – takes place around hydrothermal vents and methane seeps in the deep sea where there is no sunlight. It is performed by bacteria living on the sea floor or within animals.

Overview of Photosynthesis 6CO 2 + 6H 2 O + (light energy)  C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + (light energy)  C 6 H 12 O 6 + 6O 2 (Reactants) (Products) (Reactants) (Products) Autotrophs use photosynthesis to produce organic compounds from carbon dioxide and water. Autotrophs use photosynthesis to produce organic compounds from carbon dioxide and water. The Two Stages of Photosynthesis: The Two Stages of Photosynthesis: Light Reactions (Light Dependent Reactions) Light Reactions (Light Dependent Reactions) Calvin Cycle (Light Independent Reactions) Calvin Cycle (Light Independent Reactions)

Stage 1: Light Reactions Series of steps in which: Series of steps in which: Light energy is absorbed from the sun and converted into chemical energy (ATP and NADPH) Light energy is absorbed from the sun and converted into chemical energy (ATP and NADPH) Water (H 2 O) is the first reactant used, and O 2 is the first byproduct produced. Water (H 2 O) is the first reactant used, and O 2 is the first byproduct produced. Chemical energy is temporarily stored as ATP and NADPH (energy carrier molecule) Chemical energy is temporarily stored as ATP and NADPH (energy carrier molecule)

Stage 2: Calvin Cycle Series of steps in which: Series of steps in which: Carbon Dioxide (CO 2 ) is the second reactant used, along with the chemical energy from the light reactions (stored in ATP and NADPH) Carbon Dioxide (CO 2 ) is the second reactant used, along with the chemical energy from the light reactions (stored in ATP and NADPH) Organic compounds (glucose – C 6 H 12 O 6 ) are formed. Organic compounds (glucose – C 6 H 12 O 6 ) are formed.

Structure and Function of a Leaf

Structure and Function 1. Upper Epidermis- structure, support, protection 2. Cuticle- waxy coating, helps prevent water loss 3. Palisades Layer- where majority of photosynthesis takes place 4. Chloroplast- site of photosynthesis 5. Phloem- transports sugars in any direction 6. Xylem- transports water upward only (roots  shoots) 7. Guard Cells- specialized cells that border a stoma and regulate gas exchange 8. Stomata- gas exchange 9. Vein- transport tissue (vein= xylem + phloem) 10. Lower Epidermis- structure, support, protection 11. Spongy Layer- photosynthesis, air exchange 12. Mesophyll- air exchange and photosynthesis (3 +11)

Stomata – please sketch on your lab Guard Cells Stomata