Photosynthesis review !!
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Photosynthesis
Photosynthesis is the process by which plants and other organisms use sunlight, water and carbon dioxide to produce oxygen and energy in the form of glucose. Chlorophyll, located in chloroplasts, absorbs sunlight and uses the energy to convert carbon dioxide and water into oxygen and glucose through a two-step process - the light reactions and Calvin cycle. Plants appear green because chlorophyll, the main photosynthetic pigment, absorbs most wavelengths of visible light except green, which it reflects, giving leaves their green color.
Photochemical and biosynthetic phase
The document summarizes the light-dependent and light-independent phases of photosynthesis. It discusses:
1) How light is absorbed by pigments in the thylakoid and used to excite electrons and generate ATP and NADPH through the electron transport chain.
2) The process of non-cyclic and cyclic photophosphorylation, where ATP is generated as electrons move through the electron transport system.
3) How the products of the light reactions, ATP and NADPH, are used in the light-independent phase to reduce CO2 and produce carbohydrates through biosynthetic pathways in the chloroplast stroma.
3.8 photosynthesis
Photosynthesis involves the conversion of light energy from the sun into chemical energy. Chlorophyll, the main photosynthetic pigment, absorbs different wavelengths of light with red and blue absorbed more than green. Light energy is used to produce ATP and split water to form oxygen and hydrogen, while ATP and hydrogen are used to fix carbon dioxide and make glucose. The rate of photosynthesis is affected by temperature, light intensity, and carbon dioxide concentration.
Photosynthesis
1. The document discusses photosynthesis, the process by which plants, algae, and bacteria use sunlight, water and carbon dioxide to produce oxygen and energy in the form of glucose.
2. It describes the key components of photosynthesis including the chloroplasts, chlorophyll pigments, photosystems I and II, and the roles of water, carbon dioxide and sunlight in the process.
3. Photosynthesis occurs in the leaves of plants and involves the absorption of light by chlorophyll to produce a chemical reaction that splits water and fixes carbon dioxide into organic compounds.
Photosynthesis Part 1
This document discusses photosynthesis and the process by which plants convert light energy to chemical energy. It explains that chloroplasts in plant cells contain chlorophyll, which absorbs light for photosynthesis. Different pigments like chlorophyll a, chlorophyll b, and carotenoids absorb different wavelengths of light and reflect different colors, which determines the color we see in leaves. In fall, leaves change color as chlorophyll production decreases and carotenoid pigments become visible.
3.8 8.2 Photosynthesis PPT
1. Photosynthesis occurs in leaves through two stages - the light dependent and light independent reactions.
2. In the light dependent reactions, light energy is captured by chloroplasts and used to convert carbon dioxide and water into oxygen and energy carriers (ATP and NADPH).
3. The light independent reactions, known as the Calvin cycle, use the energy from ATP and NADPH to fix carbon from carbon dioxide into sugars.
8-2 photosynthesis an overview
This document discusses the history and process of photosynthesis. It describes several key experiments that advanced understanding, including van Helmont's experiment showing plant mass comes from water, Priestley's showing plants release oxygen, and Ingenhousz's showing this only occurs with sunlight. The overall reaction of photosynthesis is described as using sunlight, water and carbon dioxide to produce sugars and oxygen. Chlorophyll is identified as the main light-absorbing pigment located in chloroplasts, with chlorophyll a directly participating in light reactions and chlorophyll b transferring energy.
Photosynthesis ppt
This PowerPoint presentation covers photosynthesis and was last revised in June 2008. It contains 27 slides discussing topics like the light and dark reactions of photosynthesis, chloroplast structure, and how plants use light energy from the sun to produce glucose and oxygen from water and carbon dioxide. The document provides an overview of photosynthesis and its key stages and equations.
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Photosynthesis
Photosynthesis is the process by which plants and other organisms use sunlight, water and carbon dioxide to produce oxygen and energy in the form of glucose. Chlorophyll, located in chloroplasts, absorbs sunlight and uses the energy to convert carbon dioxide and water into oxygen and glucose through a two-step process - the light reactions and Calvin cycle. Plants appear green because chlorophyll, the main photosynthetic pigment, absorbs most wavelengths of visible light except green, which it reflects, giving leaves their green color.
Photochemical and biosynthetic phase
The document summarizes the light-dependent and light-independent phases of photosynthesis. It discusses:
1) How light is absorbed by pigments in the thylakoid and used to excite electrons and generate ATP and NADPH through the electron transport chain.
2) The process of non-cyclic and cyclic photophosphorylation, where ATP is generated as electrons move through the electron transport system.
3) How the products of the light reactions, ATP and NADPH, are used in the light-independent phase to reduce CO2 and produce carbohydrates through biosynthetic pathways in the chloroplast stroma.
3.8 photosynthesis
Photosynthesis involves the conversion of light energy from the sun into chemical energy. Chlorophyll, the main photosynthetic pigment, absorbs different wavelengths of light with red and blue absorbed more than green. Light energy is used to produce ATP and split water to form oxygen and hydrogen, while ATP and hydrogen are used to fix carbon dioxide and make glucose. The rate of photosynthesis is affected by temperature, light intensity, and carbon dioxide concentration.
Photosynthesis
1. The document discusses photosynthesis, the process by which plants, algae, and bacteria use sunlight, water and carbon dioxide to produce oxygen and energy in the form of glucose.
2. It describes the key components of photosynthesis including the chloroplasts, chlorophyll pigments, photosystems I and II, and the roles of water, carbon dioxide and sunlight in the process.
3. Photosynthesis occurs in the leaves of plants and involves the absorption of light by chlorophyll to produce a chemical reaction that splits water and fixes carbon dioxide into organic compounds.
Photosynthesis Part 1
This document discusses photosynthesis and the process by which plants convert light energy to chemical energy. It explains that chloroplasts in plant cells contain chlorophyll, which absorbs light for photosynthesis. Different pigments like chlorophyll a, chlorophyll b, and carotenoids absorb different wavelengths of light and reflect different colors, which determines the color we see in leaves. In fall, leaves change color as chlorophyll production decreases and carotenoid pigments become visible.
3.8 8.2 Photosynthesis PPT
1. Photosynthesis occurs in leaves through two stages - the light dependent and light independent reactions.
2. In the light dependent reactions, light energy is captured by chloroplasts and used to convert carbon dioxide and water into oxygen and energy carriers (ATP and NADPH).
3. The light independent reactions, known as the Calvin cycle, use the energy from ATP and NADPH to fix carbon from carbon dioxide into sugars.
8-2 photosynthesis an overview
This document discusses the history and process of photosynthesis. It describes several key experiments that advanced understanding, including van Helmont's experiment showing plant mass comes from water, Priestley's showing plants release oxygen, and Ingenhousz's showing this only occurs with sunlight. The overall reaction of photosynthesis is described as using sunlight, water and carbon dioxide to produce sugars and oxygen. Chlorophyll is identified as the main light-absorbing pigment located in chloroplasts, with chlorophyll a directly participating in light reactions and chlorophyll b transferring energy.
Photosynthesis ppt
This PowerPoint presentation covers photosynthesis and was last revised in June 2008. It contains 27 slides discussing topics like the light and dark reactions of photosynthesis, chloroplast structure, and how plants use light energy from the sun to produce glucose and oxygen from water and carbon dioxide. The document provides an overview of photosynthesis and its key stages and equations.
Photosynthesis
Photosynthesis occurs in four steps: (1) Carbon dioxide and water enter leaves through stomata where chloroplasts absorb sunlight using chlorophyll. (2) The light-dependent reaction uses sunlight to make ATP and NADPH by transferring electrons. (3) The light-independent reaction uses ATP and NADPH to produce glucose through the Calvin Cycle. (4) Overall, photosynthesis uses carbon dioxide, water, and sunlight to produce oxygen and glucose as an energy source for plants.
Photosynthesis time!
This document summarizes key aspects of photosynthesis. It discusses that there are two types of organisms - autotrophs that get energy from sunlight and heterotrophs that get energy from food. It also describes ATP as a high-energy molecule used to store and transport energy in cells. The main ingredients for photosynthesis are outlined as water, carbon dioxide, sunlight, and chlorophyll, which is the green pigment found in chloroplasts. The overall equation for photosynthesis is provided. Light energy is absorbed by chlorophyll and converted to chemical energy, which breaks apart water molecules to release oxygen and provides energy to convert carbon dioxide into glucose.
Ap Bio Ch7 Power Point
Photosynthesis is the process by which plants, algae, and some bacteria use sunlight, water and carbon dioxide to produce oxygen and energy in the form of glucose. It occurs in two stages: in the light-dependent reactions, sunlight is absorbed and used to convert carbon dioxide and water into glucose, producing oxygen as a byproduct. In the light-independent reactions, the glucose is then assembled from carbon dioxide using energy from the light reactions. The light reactions take place in chloroplasts within plant cells, while the dark reactions occur in the chloroplast stroma. Photosynthesis is essential for producing oxygen and food on Earth.
Unit 6 energy, respiration and photosynthesis A Level
Photosynthesis is the process by which plants use carbon dioxide, water, and sunlight to produce glucose and oxygen. It involves two stages: the light-dependent reactions where ATP and NADPH are produced, and the light-independent reactions of the Calvin cycle where glucose is produced from carbon dioxide using ATP and NADPH. The light reactions take place in the thylakoid membranes of chloroplasts and use energy from sunlight to drive the synthesis of ATP and NADPH via photophosphorylation.
Photosynthesis 1
The document describes the light reaction of photosynthesis where chloroplasts use chlorophyll and photosystems I and II to split water molecules, releasing oxygen and energizing electrons. These energized electrons are passed through an electron transport chain and ATP synthase to produce ATP, with the electrons eventually being accepted by NADP to form NADPH, providing energy for the dark reaction of photosynthesis.
Photosynthesis
This document summarizes the history and process of photosynthesis. It describes key discoveries such as Priestley observing that plants give off oxygen, and van Niel determining the reaction equation for photosynthesis in purple bacteria. It then explains the light and dark reactions of photosynthesis in detail, including Calvin's discovery of the Calvin cycle where carbon dioxide is incorporated into carbohydrates. The document also discusses different types of plants, including C3, C4, and CAM plants, and how they regulate photosynthesis through pathways like the Hatch-Slack cycle.
Photosynthesis
Photosynthesis converts light energy to chemical energy in the form of sugars. It occurs in plants, algae, and other organisms through two main stages - the light reaction and Calvin cycle. The light reaction uses energy from sunlight to make ATP and NADPH in the chloroplast thylakoid membrane. The Calvin cycle then uses ATP and NADPH to incorporate carbon dioxide from the air into organic carbon compounds to make sugars. Understanding photosynthesis can help reduce carbon dioxide levels through applications like using plants to capture carbon.
Biosynhtetic pathway (dark reaction)
This document summarizes the dark reaction (also known as the Calvin cycle) in plant photosynthesis. There are two major pathways for carbon fixation during this reaction: the C3 cycle and the C4 cycle. The C3 cycle fixes carbon dioxide into a 3-carbon compound called 3-phosphoglycerate using the enzyme rubisco. The fixed carbon is then reduced using ATP and NADPH to produce carbohydrates like glucose. The C4 cycle acts as an adaptation for plants in hot, dry environments. It initially fixes carbon dioxide into a 4-carbon compound in mesophyll cells before it is released and incorporated into the C3 cycle in bundle sheath cells. This anatomy is known as Kranz anatomy and
PRIMARY EVENTS IN Photosynthesis
WHAT IS PHOTOSYNTHESIS?, IMPORTANCE OF PHOTOSYNTHESIS, STRUCTURAL FEATURE OF LEAF ADVANTAGE FOR PHOTOSYNTHESIS,LEAVES AND LEAF STRUCTURE,CHLOROPHYLL, TYPES OF REACTIONS, LIGHT REACTION AND DARK REACTION, CYCLIC AND NON-CYCLIC PHOTOPHOSPORYLATION, MECAHANISM OF ATP SYNTHESIS, SCHEMATIC PRESENTATION OF LIGHT REACTION, CRASSULACEAN ACID METABOLISM (CAM), C3 AND C4 PLANTS, FACTORS AFFECTING RATE OF PHOTOSYNTHESIS, INTERNAL FACTORS AND EXTERNAL FACTORS,
Biology - Chp 8 - Photosynthesis - PowerPoint
This document provides an overview of photosynthesis. It explains that plants get their energy from sunlight through the process of photosynthesis, where carbon dioxide, water, and sunlight are converted into glucose and oxygen. Chlorophyll is the pigment in plants that absorbs light energy. The reactions of photosynthesis are divided into light-dependent reactions, which take place in thylakoid membranes and produce ATP and NADPH, and light-independent reactions called the Calvin cycle, which use these products to produce sugars. Factors like water availability, temperature, and light intensity can affect photosynthesis.
Photosynthesis
Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to produce oxygen and energy in the form of sugar. It occurs in two stages: the light-dependent reactions in the chloroplasts absorb sunlight and split water, producing oxygen and energized molecules. The Calvin cycle then uses this energy to fix carbon from carbon dioxide into organic compounds like glucose. Chlorophyll and other pigments capture sunlight and transfer the energy through electron transport chains to produce ATP and NADPH, which power the Calvin cycle to reduce carbon dioxide into sugars.
Photosynthesis
This PowerPoint presentation focuses on capturing the energy in light and the Calvin Cycle. Colorful diagrams and illustrations appear throughout the presentation and the following topics are addressed:
* Plant Cell Structure
* Photosynthesis Equations
* Biochemical Pathways
* 5 Steps of the Electron Transport System
* 3 Steps of the Calvin Cycle
This presentation was created by Stacey Odum in Richmond County, GA.
Photosynthesis notes
Photosynthesis is the process by which plants and other organisms convert sunlight, water and carbon dioxide into oxygen and energy in the form of sugars. It occurs in two main stages: the light reactions where sunlight is absorbed and used to produce ATP and NADPH, and the Calvin cycle where carbon dioxide is fixed using the ATP and NADPH to produce sugars. Overall, the process converts carbon dioxide and water into oxygen and energy-rich organic compounds like glucose.
Photosynthesis
Please do leave a comment about the presentation itself. This will be part of my requirement in Field Study 3. Thanks!!
Photosynthesis powerpoint
This document provides an overview of photosynthesis presented by Mr. M Dlamini in 2022. It discusses the key components and processes of photosynthesis including light and light-independent reactions, the Calvin cycle, and C3, C4 and CAM pathways. Photosynthesis uses energy from sunlight to convert carbon dioxide and water into oxygen and energy-rich organic compounds to fuel life on Earth. It occurs in chloroplasts in plant cells and involves the absorption of light, transfer of electrons, and synthesis of ATP and NADPH followed by carbon fixation through the Calvin cycle.
Photosynthesis Notes
The document provides an overview of photosynthesis, including:
1) Photosynthesis uses light energy from the sun to convert carbon dioxide and water into sugars and oxygen through a two-stage process of light-dependent and light-independent reactions.
2) The light reactions convert solar energy to chemical energy stored in ATP and NADPH. The Calvin cycle then uses this chemical energy to fix carbon from carbon dioxide into sugars.
3) Two photosystems, Photosystem I and Photosystem II, work together to drive electron transport and generate a proton gradient used to produce ATP through chemiosmosis.
Light reaction of photosynthesis
1. The light reaction of photosynthesis occurs in the thylakoid membranes of chloroplasts and involves the absorption of light by photosynthetic pigments.
2. Energy from the absorbed light is used to transfer electrons along an electron transport chain, powering the synthesis of ATP through photophosphorylation and reducing NADP+ to NADPH.
3. The products of the light reaction, ATP and NADPH, are used in the Calvin cycle to fix carbon from CO2 into organic molecules like glucose.
8.3 photosynthesis
The document summarizes photosynthesis, including both the light-dependent and light-independent reactions. It explains that the light-dependent reactions take place in the thylakoid membranes and produce ATP and NADPH through the absorption of light by photosystems. The light-independent reactions take place in the chloroplast stroma and use ATP and NADPH to produce glucose through the Calvin cycle. The structure of the chloroplast is adapted to efficiently carry out these two stages of photosynthesis through the stacking of thylakoids and positioning of the stroma.
Light independent reactions of photosynthesis
The Calvin cycle is the light-independent reaction of photosynthesis that converts the energy from ATP and NADPH produced during the light-dependent reactions into glucose. The cycle begins with carbon dioxide reacting with the five-carbon sugar RuBP to form an unstable six-carbon intermediate. This intermediate is then reduced and regenerated into two molecules of the three-carbon compound PGA. PGA is then converted into G3P using energy from ATP and NADPH, and G3P can be used to produce glucose or regenerate RuBP, using ATP.
Photosynthesis
Photosynthesis occurs in leaves through the processes of light-dependent and light-independent reactions. In the light-dependent reactions, chloroplasts use pigments like chlorophyll to absorb sunlight and drive photophosphorylation through non-cyclic or cyclic pathways. This generates ATP and NADPH that fuel the light-independent Calvin cycle where CO2 is fixed into glucose using enzymes like RuBisCO. The overall process requires chloroplast structures in mesophyll cells as well as transport of reactants and products through the leaf.
Bio 100 Photosynthesis practice
Photosynthesis is the process by which plants and other organisms use sunlight, carbon dioxide, and water to produce oxygen and energy in the form of glucose or other energy-rich organic compounds. It takes place in two main stages - the light-dependent reactions and the light-independent reactions. The light-dependent reactions use energy from sunlight to produce ATP and NADPH using chlorophyll. These products are then used in the Calvin cycle during the light-independent reactions to incorporate carbon from carbon dioxide into organic compounds.
Bio 100 Photosynthesis practice
Photosynthesis is the process by which plants and other organisms use sunlight, carbon dioxide, and water to produce oxygen and energy in the form of glucose or other energy-rich organic compounds. It takes place in two main stages - the light-dependent reactions and the light-independent reactions. The light-dependent reactions use energy from sunlight to produce ATP and NADPH using chlorophyll. The light-independent reactions, also called the Calvin cycle, use ATP and NADPH to fix carbon from carbon dioxide into organic molecules like glucose.
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Photosynthesis
Photosynthesis occurs in four steps: (1) Carbon dioxide and water enter leaves through stomata where chloroplasts absorb sunlight using chlorophyll. (2) The light-dependent reaction uses sunlight to make ATP and NADPH by transferring electrons. (3) The light-independent reaction uses ATP and NADPH to produce glucose through the Calvin Cycle. (4) Overall, photosynthesis uses carbon dioxide, water, and sunlight to produce oxygen and glucose as an energy source for plants.
Photosynthesis time!
This document summarizes key aspects of photosynthesis. It discusses that there are two types of organisms - autotrophs that get energy from sunlight and heterotrophs that get energy from food. It also describes ATP as a high-energy molecule used to store and transport energy in cells. The main ingredients for photosynthesis are outlined as water, carbon dioxide, sunlight, and chlorophyll, which is the green pigment found in chloroplasts. The overall equation for photosynthesis is provided. Light energy is absorbed by chlorophyll and converted to chemical energy, which breaks apart water molecules to release oxygen and provides energy to convert carbon dioxide into glucose.
Ap Bio Ch7 Power Point
Photosynthesis is the process by which plants, algae, and some bacteria use sunlight, water and carbon dioxide to produce oxygen and energy in the form of glucose. It occurs in two stages: in the light-dependent reactions, sunlight is absorbed and used to convert carbon dioxide and water into glucose, producing oxygen as a byproduct. In the light-independent reactions, the glucose is then assembled from carbon dioxide using energy from the light reactions. The light reactions take place in chloroplasts within plant cells, while the dark reactions occur in the chloroplast stroma. Photosynthesis is essential for producing oxygen and food on Earth.
Unit 6 energy, respiration and photosynthesis A Level
Photosynthesis is the process by which plants use carbon dioxide, water, and sunlight to produce glucose and oxygen. It involves two stages: the light-dependent reactions where ATP and NADPH are produced, and the light-independent reactions of the Calvin cycle where glucose is produced from carbon dioxide using ATP and NADPH. The light reactions take place in the thylakoid membranes of chloroplasts and use energy from sunlight to drive the synthesis of ATP and NADPH via photophosphorylation.
Photosynthesis 1
The document describes the light reaction of photosynthesis where chloroplasts use chlorophyll and photosystems I and II to split water molecules, releasing oxygen and energizing electrons. These energized electrons are passed through an electron transport chain and ATP synthase to produce ATP, with the electrons eventually being accepted by NADP to form NADPH, providing energy for the dark reaction of photosynthesis.
Photosynthesis
This document summarizes the history and process of photosynthesis. It describes key discoveries such as Priestley observing that plants give off oxygen, and van Niel determining the reaction equation for photosynthesis in purple bacteria. It then explains the light and dark reactions of photosynthesis in detail, including Calvin's discovery of the Calvin cycle where carbon dioxide is incorporated into carbohydrates. The document also discusses different types of plants, including C3, C4, and CAM plants, and how they regulate photosynthesis through pathways like the Hatch-Slack cycle.
Photosynthesis
Photosynthesis converts light energy to chemical energy in the form of sugars. It occurs in plants, algae, and other organisms through two main stages - the light reaction and Calvin cycle. The light reaction uses energy from sunlight to make ATP and NADPH in the chloroplast thylakoid membrane. The Calvin cycle then uses ATP and NADPH to incorporate carbon dioxide from the air into organic carbon compounds to make sugars. Understanding photosynthesis can help reduce carbon dioxide levels through applications like using plants to capture carbon.
Biosynhtetic pathway (dark reaction)
This document summarizes the dark reaction (also known as the Calvin cycle) in plant photosynthesis. There are two major pathways for carbon fixation during this reaction: the C3 cycle and the C4 cycle. The C3 cycle fixes carbon dioxide into a 3-carbon compound called 3-phosphoglycerate using the enzyme rubisco. The fixed carbon is then reduced using ATP and NADPH to produce carbohydrates like glucose. The C4 cycle acts as an adaptation for plants in hot, dry environments. It initially fixes carbon dioxide into a 4-carbon compound in mesophyll cells before it is released and incorporated into the C3 cycle in bundle sheath cells. This anatomy is known as Kranz anatomy and
PRIMARY EVENTS IN Photosynthesis
WHAT IS PHOTOSYNTHESIS?, IMPORTANCE OF PHOTOSYNTHESIS, STRUCTURAL FEATURE OF LEAF ADVANTAGE FOR PHOTOSYNTHESIS,LEAVES AND LEAF STRUCTURE,CHLOROPHYLL, TYPES OF REACTIONS, LIGHT REACTION AND DARK REACTION, CYCLIC AND NON-CYCLIC PHOTOPHOSPORYLATION, MECAHANISM OF ATP SYNTHESIS, SCHEMATIC PRESENTATION OF LIGHT REACTION, CRASSULACEAN ACID METABOLISM (CAM), C3 AND C4 PLANTS, FACTORS AFFECTING RATE OF PHOTOSYNTHESIS, INTERNAL FACTORS AND EXTERNAL FACTORS,
Biology - Chp 8 - Photosynthesis - PowerPoint
This document provides an overview of photosynthesis. It explains that plants get their energy from sunlight through the process of photosynthesis, where carbon dioxide, water, and sunlight are converted into glucose and oxygen. Chlorophyll is the pigment in plants that absorbs light energy. The reactions of photosynthesis are divided into light-dependent reactions, which take place in thylakoid membranes and produce ATP and NADPH, and light-independent reactions called the Calvin cycle, which use these products to produce sugars. Factors like water availability, temperature, and light intensity can affect photosynthesis.
Photosynthesis
Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to produce oxygen and energy in the form of sugar. It occurs in two stages: the light-dependent reactions in the chloroplasts absorb sunlight and split water, producing oxygen and energized molecules. The Calvin cycle then uses this energy to fix carbon from carbon dioxide into organic compounds like glucose. Chlorophyll and other pigments capture sunlight and transfer the energy through electron transport chains to produce ATP and NADPH, which power the Calvin cycle to reduce carbon dioxide into sugars.
Photosynthesis
This PowerPoint presentation focuses on capturing the energy in light and the Calvin Cycle. Colorful diagrams and illustrations appear throughout the presentation and the following topics are addressed:
* Plant Cell Structure
* Photosynthesis Equations
* Biochemical Pathways
* 5 Steps of the Electron Transport System
* 3 Steps of the Calvin Cycle
This presentation was created by Stacey Odum in Richmond County, GA.
Photosynthesis notes
Photosynthesis is the process by which plants and other organisms convert sunlight, water and carbon dioxide into oxygen and energy in the form of sugars. It occurs in two main stages: the light reactions where sunlight is absorbed and used to produce ATP and NADPH, and the Calvin cycle where carbon dioxide is fixed using the ATP and NADPH to produce sugars. Overall, the process converts carbon dioxide and water into oxygen and energy-rich organic compounds like glucose.
Photosynthesis
Please do leave a comment about the presentation itself. This will be part of my requirement in Field Study 3. Thanks!!
Photosynthesis powerpoint
This document provides an overview of photosynthesis presented by Mr. M Dlamini in 2022. It discusses the key components and processes of photosynthesis including light and light-independent reactions, the Calvin cycle, and C3, C4 and CAM pathways. Photosynthesis uses energy from sunlight to convert carbon dioxide and water into oxygen and energy-rich organic compounds to fuel life on Earth. It occurs in chloroplasts in plant cells and involves the absorption of light, transfer of electrons, and synthesis of ATP and NADPH followed by carbon fixation through the Calvin cycle.
Photosynthesis Notes
The document provides an overview of photosynthesis, including:
1) Photosynthesis uses light energy from the sun to convert carbon dioxide and water into sugars and oxygen through a two-stage process of light-dependent and light-independent reactions.
2) The light reactions convert solar energy to chemical energy stored in ATP and NADPH. The Calvin cycle then uses this chemical energy to fix carbon from carbon dioxide into sugars.
3) Two photosystems, Photosystem I and Photosystem II, work together to drive electron transport and generate a proton gradient used to produce ATP through chemiosmosis.
Light reaction of photosynthesis
1. The light reaction of photosynthesis occurs in the thylakoid membranes of chloroplasts and involves the absorption of light by photosynthetic pigments.
2. Energy from the absorbed light is used to transfer electrons along an electron transport chain, powering the synthesis of ATP through photophosphorylation and reducing NADP+ to NADPH.
3. The products of the light reaction, ATP and NADPH, are used in the Calvin cycle to fix carbon from CO2 into organic molecules like glucose.
8.3 photosynthesis
The document summarizes photosynthesis, including both the light-dependent and light-independent reactions. It explains that the light-dependent reactions take place in the thylakoid membranes and produce ATP and NADPH through the absorption of light by photosystems. The light-independent reactions take place in the chloroplast stroma and use ATP and NADPH to produce glucose through the Calvin cycle. The structure of the chloroplast is adapted to efficiently carry out these two stages of photosynthesis through the stacking of thylakoids and positioning of the stroma.
Light independent reactions of photosynthesis
The Calvin cycle is the light-independent reaction of photosynthesis that converts the energy from ATP and NADPH produced during the light-dependent reactions into glucose. The cycle begins with carbon dioxide reacting with the five-carbon sugar RuBP to form an unstable six-carbon intermediate. This intermediate is then reduced and regenerated into two molecules of the three-carbon compound PGA. PGA is then converted into G3P using energy from ATP and NADPH, and G3P can be used to produce glucose or regenerate RuBP, using ATP.
Photosynthesis
Photosynthesis occurs in leaves through the processes of light-dependent and light-independent reactions. In the light-dependent reactions, chloroplasts use pigments like chlorophyll to absorb sunlight and drive photophosphorylation through non-cyclic or cyclic pathways. This generates ATP and NADPH that fuel the light-independent Calvin cycle where CO2 is fixed into glucose using enzymes like RuBisCO. The overall process requires chloroplast structures in mesophyll cells as well as transport of reactants and products through the leaf.
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Unit 6 energy, respiration and photosynthesis A Level
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Photosynthesis is the process by which plants and other organisms use sunlight, carbon dioxide, and water to produce oxygen and energy in the form of glucose or other energy-rich organic compounds. It takes place in two main stages - the light-dependent reactions and the light-independent reactions. The light-dependent reactions use energy from sunlight to produce ATP and NADPH using chlorophyll. These products are then used in the Calvin cycle during the light-independent reactions to incorporate carbon from carbon dioxide into organic compounds.
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Photosynthesis is the process by which plants and other organisms use sunlight, carbon dioxide, and water to produce oxygen and energy in the form of glucose or other energy-rich organic compounds. It takes place in two main stages - the light-dependent reactions and the light-independent reactions. The light-dependent reactions use energy from sunlight to produce ATP and NADPH using chlorophyll. The light-independent reactions, also called the Calvin cycle, use ATP and NADPH to fix carbon from carbon dioxide into organic molecules like glucose.
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This document summarizes key aspects of photosynthesis. It discusses how plants and other organisms use sunlight to produce food through the process of photosynthesis. Photosynthesis uses carbon dioxide, water, and sunlight to produce sugars and oxygen. It occurs in two stages - the light-dependent reactions that use light to produce ATP and NADPH, and the light-independent Calvin cycle that uses these products to produce sugars. Chlorophyll is the main pigment that absorbs sunlight to drive these reactions. Many environmental factors can influence the rate of photosynthesis.
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This document summarizes key aspects of photosynthesis. It describes how plants and other organisms use sunlight to produce food through the process of photosynthesis. Photosynthesis uses carbon dioxide, water, and sunlight to produce sugars and oxygen. It occurs in two stages - the light-dependent reactions that use light to produce ATP and NADPH, and the light-independent Calvin cycle that uses these products to produce sugars. Chlorophyll is the main pigment that absorbs sunlight to drive these reactions. Many environmental factors can influence the rate of photosynthesis.
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Photosynthesis is the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to produce oxygen and energy in the form of glucose. It occurs in the chloroplasts of plant cells and involves two stages - the light dependent reaction where ATP and NADPH are produced, and the light independent Calvin cycle where glucose is produced. Chlorophyll and other pigments absorb sunlight which is used to drive these reactions that ultimately convert carbon dioxide into organic compounds.
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Photosynthesis is the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to produce oxygen and energy in the form of glucose. It occurs in the chloroplasts of plant cells and involves two stages - the light reaction which converts solar energy to chemical energy through electron transport and photophosphorylation, and the Calvin cycle which uses the chemical energy to fix carbon from carbon dioxide into organic compounds. Photosynthesis is essential as it provides food and oxygen for all living organisms.
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Photosynthesis is the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to produce oxygen and energy in the form of glucose. It occurs in the chloroplasts of plant cells and involves two stages - the light dependent reaction where ATP and NADPH are produced, and the light independent Calvin cycle where glucose is produced. Chlorophyll and other pigments absorb sunlight which is used to drive these reactions that ultimately convert carbon dioxide into organic compounds.
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The document discusses several key physiological processes involved in crop production, with a focus on photosynthesis. Photosynthesis is the process by which plants convert light energy, carbon dioxide, and water into glucose and oxygen through a series of light-dependent and light-independent reactions. It occurs in the chloroplasts of plant leaves through the absorption of light by chlorophyll and other pigments, and generates ATP and NADPH that power the fixation of carbon during the dark reactions. Photosynthesis is vital as it produces organic molecules, oxygenates the atmosphere, and forms the basis of food webs on Earth.
Study Guide Chapter 10-Answers!10.1 Photosythesis_______________.docx
Study Guide Chapter 10-Answers!
10.1 Photosythesis_______________________________________________________
1A. Write the overall reaction (major reactants and major products) for photosysthesis:
sunlight + water + CO2 ( O2 and glucose
B. Where is each reactant used (light reactions or Calvin cycle?)
Sunlight= light reactions
Water= light reactions (when it is “split” the electrons in the bonds of water are used to replace the electrons lost from the P680 reaction center)
CO2= Calvin cycle
C. Where is each product produced (light reactions or Calvin cycle?)
O2= light reactions (when water is “split”)
Glucose= Calvin cycle
2. Compare and contrast Autotrophs and Heterotrophs.
Auto- make their own food
Hetero- rely on autotrophs for food
3. A. Where would you most likely find mesophyll cells in a tree?
Any photosynthetic part of the tree. Leaves are the main photosynthetic organs in the tree.
B. How many chloroplasts does a typical mesophyll cell hold? 30-40
C. What pigment gives a leaf its green color? chlorophyll
D. Where exactly is this pigment located? Within chloroplasts
E. How does carbon dioxide enter the leaf? Through stomata in the leaves
4. Chloroplast structure: Name all components of the chloroplast and describe their orientation relative to one another. Start at the outer membrane and end inside a thylakoid.
Outer membrane
Intermembrane space
Inner membrane
Stroma
Thylakoid membrane
Thylakoid space
5. Identify the two main stages of photosynthesis and where these stages occur respectively. Also describe how the two stages are dependent on one another.
Stage 1= Light reactions- in thylakoid membranes and thylakoid space, the main products of this stage are some the main reactants of the next stage
Stage 2= Calvin cycle- in stroma, some of the products of this stage are some of the main reactants for stage 1.
10.2 Light Rxns. Chemical Energy of Sun ( ATP and NADPH____________________
6. Green light is _____reflected______________ (reflected/absorbed) by a chloroplast, giving it its green color.
7. What wavelengths of light are most effective in driving photosynthesis?
Violet and red
Briefly describe the experiment (discussed in the chapter and powerpoint for this chapter) that identified these wavelengths of light.
The plants produced high levels of oxygen (one of the major products of photosynthesis) when exposed to violet and red light and produced little to no oxygen when exposed to other wavelengths of light. This makes sense. Think about the photosystem reaction centers in the thylakoid membranes of the chloroplast. P680 and P700, the letter “P” represents “photosystem” and the numbers refer to the wavelengths of light the photosystems absorb. Wavelengths 680 and 700 are both in the red range!
8. Describe what happens when chlorophyll absorbs light?
Electrons in chlorophyll absorb energy and are “jumped” to higher energy level.
9. Photosystems: What are they and where are they located?
Light harvesting comp.
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Phototrophs use light energy and photosynthesis to produce carbohydrates from carbon dioxide. There are two types of photosynthesis - oxygenic photosynthesis, which produces oxygen and is used by plants, algae and cyanobacteria, and anoxygenic photosynthesis, which is used by certain bacteria and does not produce oxygen. Both types of photosynthesis require light-absorbing pigments like chlorophyll and bacteriochlorophyll to capture light energy and drive the photosynthetic reactions that fix carbon dioxide.
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Physiological processes like photosynthesis, respiration, transpiration and translocation affect crop production. Photosynthesis is the most important process whereby plants convert carbon dioxide and water into glucose and oxygen using chlorophyll and sunlight. It provides energy and organic molecules for plants and the basis for the food chain. The key factors that influence photosynthesis are internal factors like chlorophyll and leaf age and anatomy as well as external environmental factors such as light, temperature, carbon dioxide, and water availability.
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Photosynthesis review !!
- 2. Organisms that can synthesize their own food from inorganic materials are called_____. Autotrophs
- 3. All ______ rely on autotrophs for food, since autotrophs are the producers of the food web. Heterotrophs
- 4. The electromagnetic spectrum ranges from gamma radiation to _______ waves. Radio
- 5. On the visible spectrum, energy content of light is greatest for ______. Violet light
- 6. What two things must go into the light reactions? Water, Light
- 7. The color _____ has the shortest wavelength. Violet
- 8. The color _____ has the lowest energy. Red
- 9. Which colors are most useful in photosynthesis? Red, violet, and blue
- 10. What type of wavelengths do high-energy photons have? Short wavelengths
- 11. Where on the electromagnetic spectrum is visible light found? In a small portion in the middle of the spectrum. Ranging from about 400 nm- 750 nm
- 12. Which of these phosphorylates ADP to make ATP? What is it called? E- ATP Synthase
- 13. _____ releases energy that is used to create the H+ gradient in the thylakoid. What is it called? B- Electron transport chain
- 14. Water is split into oxygen and H+ by ____. What is it called? A- Photosystem II
- 15. Electrons leaving ___ will be used to reduce NADP+. Name? C- Photosystem I
- 16. Where on this diagram would chlorophyll be found? A and C- The Photosystems
- 17. What is D? Thylakoid space or compartment.
- 18. What limits the progress of the Calvin cycle? Carbon dioxide, light, temperature (enzymes!).
- 19. Carbon fixation involves adding carbon dioxide to ____. RuBP
- 20. After PGA is phosphorylated, it is reduced by ______. NADPH
- 21. How many carbon dioxide molecules are needed to make one molecule of glucose? 6
- 22. How many ATP are required to regenerate RuBP from PGAL? 3
- 23. How many ATP are necessary to phosphorylate PGA? 6 ATP
- 24. NADPH and ATP are used in the light _________ reactions of photosynthesis. Independent (Calvin Cycle)
- 25. Water is split and oxygen is released in which reactions of photosynthesis? Light-dependent reactions
- 26. What molecule is the oxygen formed from during photosynthesis? Water
- 27. During chemiosmosis, the H+ concentration is higher in the ____ of the chloroplast. Thylakoid space.
- 28. During chemiosmosis hydrogen ions flow _____ their concentration gradient through _____________ in the thylakoid membrane. Down; ATP synthase
- 29. In the Calvin cycle, carbon dioxide is (oxidized/reduced) to form PGAL. Reduced
- 30. Five molecules of PGAL are used to re-form _____ molecules of RuBP. 3
- 31. Water vapor exits and carbon dioxide enters through the ___ in the leaf. Stomata.
- 32. When photons hit the photosystems electrons from ____ molecules are excited. Chlorophyll
- 33. To make one molecule of glucose, how many ATP are necessary? 18 ATP
- 34. How many carbons does a molecule of RuBP have? 5
- 35. Carbon fixation occurs in the ___ of the chloroplast. Stroma
- 36. Why is light necessary in photosynthesis? It energizes the electrons.
- 37. What is the equation for photosynthesis? 6CO2 + 6H2O + light energy C6H12O6 + 6O2