Photosynthesis
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1. Photosynthesis is the process by which plants produce their own food using carbon dioxide, water and sunlight through the action of chlorophyll. 2. The key requirements for photosynthesis are carbon dioxide, water, sunlight, and chlorophyll. Photosynthesis produces glucose and releases oxygen as a byproduct. 3. The rate of photosynthesis is affected by light intensity, carbon dioxide concentration, and temperature - it proceeds fastest at around 40°C and declines above and below this temperature range.
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The document discusses factors that affect the rate of photosynthesis in plants, including light intensity, carbon dioxide levels, and temperature. It states that initially increasing levels of these factors increases the photosynthesis rate, but the rate levels off at their maximum. Temperature peaks and then the rate decreases if it is too high. The role of the enzyme rubisco is also discussed, which incorporates carbon dioxide but can also incorporate oxygen if levels are high.
Neurological Emergencies
1. The document discusses various neurological emergencies including coma, seizures, syncope, and stroke. It provides guidance on assessing and managing the airway, breathing, and circulation for patients with an altered mental status.
2. For seizures, it describes different seizure types and emphasizes protecting the patient during a seizure and assessing them afterwards.
3. Syncope or fainting is discussed as a temporary loss of consciousness often due to low blood pressure or cardiac issues. Stroke signs like paralysis and speech problems are also outlined.
Photosynthesis
The document discusses photosynthesis and the factors that affect its rate. It explains that the three limiting factors of photosynthesis are light intensity, carbon dioxide concentration, and temperature. Graphs show how the rate levels off or declines when these factors become limited. Horticulture can help reduce these limiting effects by providing extra lighting to greenhouses, increasing temperature which also releases more carbon dioxide, and allowing for increased and earlier crop yields under more controlled conditions.
Principles pertaining to limiting factors and ecological assessment
1. Liebig's law of the minimum and Shelford's law of tolerance discuss how various limiting factors determine the growth, distribution, and abundance of organisms. Liebig's law states that plant growth is dependent on the scarcest resource, while Shelford's law discusses how the range of environmental factors a species can tolerate limits its presence.
2. Key limiting factors include temperature, light, water, atmospheric gases, biogenic salts, and currents/pressures. Temperature, in particular, restricts organisms to narrow ranges and aquatic organisms have less tolerance than land animals. Light intensity and quality also impact plants and animals. Water availability, in the form of rainfall distribution and humidity, further limits distributions.
3
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Solutions for maintaining oxygen levels in mixing vessels
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Important Helpful Biology revision notes--Must See
Important Helpful Biology revision notes--Must See
Principles pertaining to limiting factors and ecological assessment
Principles pertaining to limiting factors and ecological assessment
Similar to Photosynthesis
Photosynthesis PPT (1).pptx
Photosynthesis definition states that the process exclusively takes place in the chloroplasts through photosynthetic pigments such as chlorophyll a, chlorophyll b, carotene and xanthophyll. All green plants and a few other autotrophic organisms utilize photosynthesis to synthesize nutrients by using carbon dioxide, water and sunlight. The by-product of the photosynthesis process is oxygen.Let us have a detailed look at the process, reaction and importance of photosynthesis.
What Is Photosynthesis in Biology?
The word “photosynthesis” is derived from the Greek words phōs (pronounced: “fos”) and σύνθεσις (pronounced: “synthesis“)Phōs means “light” and σύνθεσις means, “combining together.” This means “combining together with the help of light.”
Photosynthesis also applies to other organisms besides green plants. These include several prokaryotes such as cyanobacteria, purple bacteria and green sulfur bacteria. These organisms exhibit photosynthesis just like green plantsThe glucose produced during photosynthesis is then used to fuel various cellular activities. The by-product of this physio-chemical process is oxygen.
Photosynthesis Reaction
A visual representation of the photosynthesis reaction
Photosynthesis is also used by algae to convert solar energy into chemical energy. Oxygen is liberated as a by-product and light is considered as a major factor to complete the process of photosynthesis.
Photosynthesis occurs when plants use light energy to convert carbon dioxide and water into glucose and oxygen. Leaves contain microscopic cellular organelles known as chloroplasts.
Each chloroplast contains a green-coloured pigment called chlorophyll. Light energy is absorbed by chlorophyll molecules whereas carbon dioxide and oxygen enter through the tiny pores of stomata located in the epidermis of leaves.
Another by-product of photosynthesis is sugars such as glucose and fructose.
These sugars are then sent to the roots, stems, leaves, fruits, flowers and seeds. In other words, these sugars are used by the plants as an energy source, which helps them to grow. These sugar molecules then combine with each other to form more complex carbohydrates like cellulose and starch. The cellulose is considered as the structural material that is used in plant cell walls.
Also Read: Photosynthesis in Higher plants
Where Does This Process Occur?
Chloroplasts are the sites of photosynthesis in plants and blue-green algae. All green parts of a plant, including the green stems, green leaves, and sepals – floral parts comprise of chloroplasts – green colour plastids. These cell organelles are present only in plant cells and are located within the mesophyll cells of leaves.
Factors Affecting Photosynthesis
Photosynthesis process requires several factors such as:
Light Intensity: Increased light intensity results in a higher rate of photosynthesis. On the other hand, low light intensity results in a lower rate of photosynthesis.
The concentration of CO2: Higher conce
nutrition in plants
The document summarizes photosynthesis in plants. It describes how plants perform autotrophic nutrition by using carbon dioxide, water, and sunlight to produce oxygen and glucose through the processes of light and dark reactions in the chloroplasts. Photosynthesis occurs primarily in leaves, which have adaptations like thinness, large surface area, and stomata to facilitate gas exchange and maximize light absorption for efficient photosynthesis.
Nutrition in plants
The document summarizes photosynthesis in plants. It describes how plants produce their own food through the process of photosynthesis using carbon dioxide, water, and sunlight. Photosynthesis takes place in chloroplasts in the leaves using chlorophyll. The light reaction uses light energy to produce ATP and NADPH, while the dark reaction uses these products to produce carbohydrates like glucose. Oxygen is released as a byproduct. Experiments are described that show chlorophyll and carbon dioxide are necessary for photosynthesis. Factors like light intensity, carbon dioxide concentration, temperature, and water supply can affect the rate of photosynthesis.
Nutrition In Plants Arist
The document summarizes photosynthesis in plants. It describes how plants produce their own food through the process of photosynthesis using carbon dioxide, water, and sunlight. Photosynthesis takes place in chloroplasts in the leaves using chlorophyll. The light reaction uses light energy to produce ATP and NADPH, while the dark reaction uses these products to produce carbohydrates like glucose. Oxygen is released as a byproduct. Experiments are described that show chlorophyll and carbon dioxide are necessary for photosynthesis. Factors like light intensity, carbon dioxide concentration, temperature, and water supply can affect the rate of photosynthesis.
Plants don't go to Coto
Van Helmont conducted an experiment where he planted a willow sapling in soil and measured the soil weight before and after 5 years of growth. He found that the tree had gained 74kg in weight but the soil had only lost 52g. This showed that the tree's food came from water alone, not the soil. However, he overlooked the role of carbon dioxide from the air, which plants use along with water during photosynthesis to produce their own food in the form of glucose.
Respiration.pptx
The three main functions of plants are photosynthesis, respiration, and transpiration. Photosynthesis captures light energy to produce sugars, respiration metabolizes sugars to provide energy for growth and processes, and transpiration is the loss of water vapor through leaves which transports minerals and maintains turgor pressure.
BIOL4120_Lect3.ppt
This document summarizes key points from a lecture on adaptation to the physical environment of light, energy, and heat:
1) Light is the primary source of energy for the biosphere and plants capture this energy through photosynthesis. Photosynthesis exists in three main pathways - C3, C4, and CAM - which provide adaptations to different water and temperature conditions.
2) Temperature and light availability influence photosynthesis and respiration rates in plants. Plants exhibit a variety of adaptations related to photosynthetic pathways, leaf and root allocation, and nutrient uptake to optimize growth in different environmental conditions.
3) Animals maintain homeostasis using feedback systems to regulate internal conditions like temperature, water balance, and pH within survivable limits
Photosynthesis
The document discusses photosynthesis and how it 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 explains that chloroplasts are the sites of photosynthesis and contain chlorophyll, which absorbs sunlight that is converted to chemical energy. The light reactions use sunlight to make ATP and NADPH, while the dark reactions, such as the Calvin Cycle, use this energy to fix carbon from carbon dioxide into organic molecules like glucose. Photosynthesis is essential as it produces oxygen and feeds the base of the food chain.
Plant nutrition
This document provides information about plant nutrition and photosynthesis. It discusses how plants obtain raw materials like carbon dioxide and water, how chloroplasts trap light energy to convert it to chemical energy through photosynthesis, and how glucose and oxygen are produced. The document outlines the processes, equations, and limiting factors of photosynthesis. It also addresses the importance of nitrate ions and magnesium ions for plant growth, and describes the uses and dangers of overusing nitrogen fertilizers, such as eutrophication of water sources.
Photosynthesis 2013 new
This document discusses photosynthesis and its requirements. It states that photosynthesis is the process by which plants use sunlight, water and carbon dioxide to produce glucose and oxygen. The key requirements for photosynthesis are light, carbon dioxide, water and chlorophyll. The products are glucose, which is stored as starch in plants, and oxygen, which is released.
Photosynthesis class 10.pptx
Photosynthesis requires carbon dioxide, sunlight, water and chlorophyll. It occurs in leaves through light and dark reactions. In light reactions, sunlight is absorbed by chlorophyll which drives the production of ATP and NADPH using water. In dark reactions, carbon dioxide is reduced to carbohydrates like glucose using ATP and NADPH in the Calvin cycle. The rate depends on factors like light intensity, carbon dioxide concentration, temperature and water availability.
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This document discusses crop physiology and stress tolerance research conducted by Dr. Md. Tariqul Islam. It summarizes key plant processes like photosynthesis, transpiration, mineral absorption, and growth. It also describes different types of photosynthesis (C3, C4, CAM) and factors influencing photosynthesis like photorespiration. The document outlines common plant stresses and techniques used to measure growth parameters and analyze crop physiology experiments.
Decay and the carbon cycle
Decay is caused by microorganisms like bacteria and fungi. Leaves decay faster in summer due to higher temperatures which increase microbial activity. Decay returns nutrients to the environment and soil by breaking down organic matter, supporting new plant growth. Key factors that affect decay rates are: temperature, oxygen, and water. Decay is part of the carbon cycle and helps form fossil fuels over long periods of time.
powerpoint presentation of photosynthesis
Plants use photosynthesis to produce their own food from carbon dioxide, water, and sunlight. Photosynthesis is essential because it supports all life by producing oxygen and starting food chains. During photosynthesis, chloroplasts in plant leaves use energy from sunlight to convert carbon dioxide and water into glucose and oxygen. Experiments have shown that plants obtain all the materials they need to grow, including wood and roots, from water, carbon dioxide, and sunlight through photosynthesis.
Mphomodise
Plants use photosynthesis to produce their own food from carbon dioxide, water, and sunlight. Photosynthesis is essential because it supports all life by producing oxygen and starting food chains. During photosynthesis, chloroplasts in plant leaves use energy from sunlight to convert carbon dioxide and water into glucose and oxygen. Experiments have shown that plants obtain all the materials they need to grow, including wood and roots, from water, carbon dioxide, and sunlight through photosynthesis.
Decay and the carbon cycle
Decay and the Carbon Cycle discusses how decay returns materials to the environment through a natural cycle. It focuses on three key points: how plants and animals decay and return nutrients to soil, the type of organism (fungi) that causes leaves to rot, and how higher temperatures in summer cause leaves to decay faster. The document explores the factors like oxygen, water, and temperature that affect the rate of decay and how decay is useful for recycling nutrients and forming fossil fuels over time.
ACFrOgDlU1Xj7mhmzOn4Ih5d767qdTdgwFYRB8_JH4re-RhtnxgnmVPVqZE2DLoBljp9gir8txBhH...
The document provides a revision guide for the CXC Biology exam covering several topics:
1. Growth in plants versus animals, focusing on plant growth occurring in meristematic tissues only.
2. Germination, outlining the key conditions and multi-step process, from water absorption to seed coat rupture and seedling emergence.
3. Nutrition types, differentiating between autotrophic and heterotrophic nutrition and defining nutrients as chemical substances providing nourishment.
It also provides details on photosynthesis, including the word equation, role of products, stages (light and dark), leaf adaptations and structures, and limiting factors. Testing methods for photosynthesis and the presence of its products (starch and oxygen)
08.nutrition in plants__arist
This document discusses photosynthesis and the factors that affect it. It begins by explaining that autotrophic nutrition, the process by which green plants produce their own food, is photosynthesis. Photosynthesis requires carbon dioxide, water, sunlight, and chlorophyll. It occurs in the chloroplasts of leaves and produces glucose and oxygen. The document then discusses the light and dark reactions of photosynthesis, and explains how plants use and store the glucose produced. It describes experiments that demonstrate the need for chlorophyll, carbon dioxide, and light for photosynthesis to occur. The document concludes by discussing mineral requirements in plants and the use of fertilizers in agriculture.
Photosynthesis
Photosynthesis is the process by which plants use sunlight, carbon dioxide, and water to produce oxygen and food (glucose) for themselves. It occurs in chloroplasts, which contain the green pigment chlorophyll that helps capture the sun's energy. Photosynthesis is a chemical reaction that converts sunlight, carbon dioxide, and water into oxygen and glucose, with the rate limited by light intensity, carbon dioxide concentration, and temperature.
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Photosynthesis
- 8. INTRODUCTION Yummy!!! What are the similarities between baking a cake and photosynthesis?
- 13. Carbon dioxide
- 15. Soil Water Water Root Hair To Xylem Vessel Water Water
- 17. Leaf Plant Cell Chloroplast
- 19. Xylem H 2 O CO 2 H 2 O H 2 O CO 2
- 20. Carbon Dioxide +Water Light Chlorophyll Glucose + Oxygen O 2 O 2 Surroundings STARCH