PHOTOSYNTHESIS - RESEARCH WORK

Summary

This video provides an educational dive into the intricacies of photosynthesis, exploring important scientific research and contributions from renowned scientists. You'll learn about the photosynthesis equation, detailing the role of carbon dioxide, water, and light in the production of glucose and oxygen by plants. Multiple scientific experiments and milestones are discussed, highlighting the works of pioneers like Van Helmont, Joseph Priestley, and Julius Randsacks. These experiments underline the significance of light and chlorophyll in the photosynthesis process, alongside revealing biochemical reactions involved. Overall, the video acknowledges the numerous scientists whose discoveries have paved the way for today's understanding of photosynthesis in plants.

Highlights

• Discover the magic behind plants using sunlight, carbon dioxide, and water to create glucose and oxygen! ✨
• Learn about Van Helmont's classic willow tree experiment that shed light on plant growth and water usage. 🌳
• Joseph Priestley's clever candle and mouse experiment demonstrated the role of gases in photosynthesis! 🕯️🐭
• Find out how light and different colors impact the rate of photosynthesis, thanks to Engelmann's experiments. 🌈
• Chlorophyll isn't just any pigment; it's found in chloroplasts and is crucial for photosynthesis! 🎨

Key Takeaways

• Photosynthesis turns sunlight into energy, making it a magical process that keeps us and the planet alive! ☀️
• Van Helmont, Priestley, and other scientists rock for figuring out the basics of photosynthesis! 🧪
• Chlorophyll and sunlight are the stars of the photosynthesis show, working together to create oxygen and glucose. 🌿
• Understanding photosynthesis helps us appreciate nature's green miracle and the science behind it. 🌱

Overview

In this fascinating exploration of photosynthesis, the video opens our eyes to the magical process plants undergo using sunlight, carbon dioxide, and water to create food and oxygen. These green wonders not only decorate our planet but also provide the essential fuel for life as we know it. What seems like a simple function is a cleverly engineered process that's been the focus of scientific curiosity for centuries.

Some of the greatest minds in science, like Van Helmont and Priestly, have unraveled the secrets behind photosynthesis through groundbreaking experiments. From discovering plant water intake to understanding gaseous exchanges, these scientists laid the groundwork for our current knowledge. Their persistence and creativity highlight the importance of inquiry and experimentation in deciphering nature's phenomena.

Today, our understanding of photosynthesis is also enriched by insights into chlorophyll's role. Julius Randsacks's revelation about chlorophyll within chloroplasts set a new path in photosynthesis research. Additionally, Engelmann's work with different light colors showcased the intricate relationship between light and plant life. This video not only explains these scientific breakthroughs but celebrates the collective human effort to understand one of life's most vital processes.

Chapters

• 00:00 - 00:30: Introduction The Introduction chapter provides an overview of the video content focusing on photosynthesis. It sets clear learning objectives, which include defining photosynthesis using a chemical equation, explaining the scientific research related to the requirements, products, and process of photosynthesis. It highlights the importance of appreciating scientists for their contributions to this field. The chapter also emphasizes the major keywords associated with the topic.
• 00:30 - 01:00: Observation of Plants The chapter titled 'Observation of Plants' explores the theme of photosynthesis and the intrinsic beauty of plants. It discusses how plants are not only visually pleasing but are also vital resources for all living organisms on Earth. The chapter emphasizes the importance of plants in providing food and the joy they bring to people.
• 01:00 - 02:00: Process of Photosynthesis Green plants use sunlight to synthesize food from carbon dioxide and water. In this process, plants take in carbon dioxide from the atmosphere and absorb water and minerals from the soil. These are then transformed into complex organic substances like glucose. Oxygen is released as a byproduct. The glucose is later converted into starch and is stored in plant tissues. This process is vital because it not only provides food for the plants themselves but also releases oxygen into the atmosphere as a valuable resource.
• 02:00 - 03:00: Chemical Equations of Photosynthesis The chapter discusses the process of photosynthesis and its chemical equation. The chemical equation was initially proposed by CB van, which depicts the transformation of carbon dioxide and water into other compounds.
• 03:00 - 05:00: Scientific Research on Photosynthesis The chapter discusses the chemical process involved in photosynthesis, specifically highlighting the formation of carbohydrates. Initially, the explanation suggests that for one molecule of carbohydrate to be formed, one molecule of water and one molecule of oxygen are produced, though this is noted as an unbalanced equation. Through further research, a balanced chemical equation is proposed, represented as: 6CO2 + 12H2O -> C6H12O6 + 6O2 + 6, providing insight into the molecular interactions during photosynthesis.
• 05:00 - 06:30: Role of Light in Photosynthesis The chapter discusses the pivotal role of light in the process of photosynthesis and highlights significant scientific research that has been conducted on this topic. It also mentions key milestones and influential scientists in the field, with a specific reference to a scientist named Helmet, who is recognized as a pioneer for his observational contributions to the understanding of photosynthesis.
• 06:30 - 08:00: Significance of Chlorophyll and Chloroplasts The chapter titled 'Significance of Chlorophyll and Chloroplasts' discusses an experiment conducted by a scientist involving a willow tree. The scientist planted the willow tree in a pot with soil and conducted the experiment over five years. Initially, the weight of both the soil and the plant was measured. After five years, it was observed that the weight of the soil remained unchanged while the weight of the plant increased significantly by over 12 stones. The conclusion drawn from this experiment was that plants absorb water to grow. The experiment highlights the vital role chlorophyll and chloroplasts play in the process of photosynthesis, enabling plants to utilize water efficiently for growth.
• 08:00 - 10:00: Conclusion and Summary In the chapter titled 'Conclusion and Summary', the researcher discusses his work on purple sulfur bacteria, noting a relationship between carbon dioxide absorption and hydrocarbon production with the availability of H2S. He draws parallels to plant processes, where plants use water instead of H2S, releasing oxygen in the process.

PHOTOSYNTHESIS - RESEARCH WORK Transcription

• 00:00 - 00:30 [Music] photosynthesis and research work objectives by the end of this video you will be able to define photosynthesis with an equation explain the research work done in this context of Requirement products and process of photosynthesis obviously you will appreciate the scientist for their contribution in this regard keywords the major keywords in
• 00:30 - 01:00 this video are photosynthesis and find this book observe these videos how beautiful they are the plants give pleasure to our eyes the plants are always the gifts of nature we feel very happy to be with the plants of course the plants not only give pleasure to our eyes but also so as food resources for all the living organisms on this earth would you like to know what made the
• 01:00 - 01:30 plants to be the food resources the green plants in the presence of sunlight acquiring carbon dioxide gas from the atmosphere water and minerals from the soil produce complex organic substances such as glucose meanwhile it produces oxygen to glucose is converted into starch and stored in the tissues of the plant whereas oxygen is released into the
• 01:30 - 02:00 atmosphere this process is known as photosynthesis chemical equation of photosynthesis earlier a simple chemical equation has been proposed by CB van named by his observations that is co 2 plus 2 which 2o gives rise to the h2o + h2o + or - this explains the explain
• 02:00 - 02:30 this explains that one molecule of carbohydrate to be formed one molecule of water and one molecule of oxygen produced but this is not a balanced equation after several works the final of chemical equation has been proposed such as six co2 plus 12 which two gives rise to c6 h-12 o-6 plus 6 4 2 plus 6
• 02:30 - 03:00 h2o scientific research a lot of scientific research work had been done in this regard in this video we are going to learn some of the milestones and the scientists who ever worked in this regard the first one is one helmet he was the pioneer in this regard because he was the one who observed that
• 03:00 - 03:30 the plants take the water and grew he performed a five-year experiment with a willow tree planted in a pot with soil he has taken the initial and final ways of soil and plant and he has found that final weight of the soil is same as in shell but the plant weighed over 12 stones more with his observations he concluded that the plants drink water and grow the next day scientist pays CB
• 03:30 - 04:00 brand name he has worked on purple sulfur bacteria he has observed that the amount of carbon dioxide absorbed and the production of hydrocarbons depend on the amount of h2 is available he tried to relate this issue to the plants instead of h2s the plants use water and release oxygen with thus bacteria
• 04:00 - 04:30 release sulfur with his observations he proposed a general equation which we have discussed earlier the next scientist is Joseph Priestley he reported the first evidence that gas is participating photosynthesis he have done an experiment with the candle moles plant and Belgium he has taken a bell jar which is airtight place the candle inside it after some time the candle puts off next
• 04:30 - 05:00 time he has tried with a candle along with the mouse this time the candle puts off as well as the most fainted due to the suffocation but the next time has introduced a plant along with the Mosin candle this time the candle would not put off and the mouse is also very active so with a simple experiment we can easily conclude the
• 05:00 - 05:30 role of gases in the process of photosynthesis he has proposed with this observation that the plant's growth released the gas which is required for life and absorbs the gas which is not preferred for animal life John engine huh he has observed that the effect observed by Priestley occurred only when the plant is illuminated it means that the light plays an important role in the
• 05:30 - 06:00 process of photosynthesis he has observed more air bubbles around hydrilla which is illuminated with the sunlight when compared to the plants in shade and also he has observed the air bubbles contain oxygen gas with these observations he has concluded that light plays an important role in the process of photosynthesis as well as oxygen is released in this process Angelman he
• 06:00 - 06:30 detected the maximum rate of photosynthesis under sunlight used all-gay expose it to different colors of light in this experiment is observed two things the first one is all gain leads to more air bubbles in red and to color race and the second thing is that oxygen sensitive bacteria crowd around all gay underrate and blue light with these observations he concluded
• 06:30 - 07:00 that the light plays a major role in the process of photosynthesis as well as it releases oxygen during this process military intervention these two scientists have taken the extract of green colored pigment from a leaf and it is named as chlorophyll but the thing is that the chlorophyll extract when illuminated with the light could not
• 07:00 - 07:30 perform photosynthesis this has given a caution mark that what is the thing which is required further for the process of photosynthesis along with chlorophyll this question was answered by Julius ransacks after the Pelletier and Kevin Shu extraction of chlorophyll pigment it was thought that the chlorophyll pigment has been scattered throughout the leaf but
• 07:30 - 08:00 Julius ransacks revealed the fact that chlorophyll pigment is located only in some of the cell organelles in the plant tissues that is chloroplast with this observation we can easily conclude that the chloroplast is an aggregate structure containing the chlorophyll pigment and other substances which are required for photosynthesis Robert King
• 08:00 - 08:30 he demonstrated the hill reaction of photosynthesis he proved the release of oxygen from water molecule he also made contributions to the development of zet scheme of light reaction will discuss about the dip scheme or flight reaction later I would like to say something about chemical equations which we have discussed in this video that is 6:02 flex well vegetable gives rise to c6h12o6 let's explore to Kasich's h2o it verbally says that
• 08:30 - 09:00 carbon dioxide reacts with water molecule to produce glucose and oxygen but it is totally wrong then what is right carbon dioxide does not react with the water molecule it takes part in the second phase of photosynthesis oxygen is released from the water molecule this equation just represents the requirements and products of photosynthesis literally it is a complex process which involves several biochemical reactions we'll discuss
• 09:00 - 09:30 about these biochemical reactions in further videos finally let me summarize the things whatever we have learnt so far photosynthesis is a process in which the organisms like plants with chlorophyll utilize light as energy source acquire a carbon dioxide from atmosphere water and minerals from the soil produce glucose and release oxygen sever a lot of scientists worked on tracing out the facts of this process some of them are van Neil Priestley engine house Angelman etc scientific
• 09:30 - 10:00 research in this aspect in volt time over years but the contributions of scientists are always appreciated