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mollie
30/03/2023
Biology
GCSE Double Award Science Biology Osmosis notes
Osmosis and plant transport are crucial processes in plant biology. This guide covers the definition of osmosis, its effects on plant and animal cells, transpiration, factors affecting transpiration, and methods to measure water loss in plants. What is osmosis and how it impacts cell structure and function is thoroughly explained, along with the importance of turgor pressure in plants.
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This page discusses the effects of osmosis on animal cells and introduces the concept of transpiration in plants.
Osmosis in Animal Cells: When water moves into an animal cell, its volume increases, stretching the cell membrane. If this continues, the cell membrane may eventually split, causing cell lysis.
Vocabulary: Cell lysis is the bursting of a cell due to excessive water intake through osmosis.
Transpiration: Transpiration is defined as the evaporation of water from mesophyll cells, followed by diffusion through leaf air spaces and stomata.
Definition: Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems, and flowers.
Factors Affecting Transpiration Rate:
Highlight: Factors affecting transpiration rate in plants include temperature, wind speed, humidity, and light intensity.
This page covers the various uses of water in plants and introduces methods for measuring transpiration.
Uses of Water in Plants:
Example: Water provides structural support to plants through turgor pressure, which keeps cells firm and maintains plant shape.
Measuring Transpiration:
Highlight: The potometer is a device used to measure the rate of water uptake in a cut plant shoot, which can be used as an indicator of transpiration rate.
Vocabulary: A potometer is an instrument used to measure the rate of water uptake of a leafy shoot.
This page discusses additional methods for measuring water loss in plants, focusing on the washing line method.
The Washing Line Method:
Example: The washing line method can be used to compare water loss in leaves exposed to different light intensities or wind speeds.
Highlight: The washing line method provides a simple yet effective way to compare how light intensity affects the rate of transpiration or how other environmental factors impact water loss in plants.
This method allows for direct comparison of water loss under various environmental conditions, making it valuable for studying factors affecting transpiration in plants.
Vocabulary: Transpiration rate is the speed at which water evaporates from the aerial parts of a plant.
Understanding these methods of measuring water loss is crucial for studying plant physiology and the effects of osmosis in plant cells. These techniques help researchers and students investigate how different environmental factors influence plant water relations and overall plant health.
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Y9 Biology Revision Notes
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mollie
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Osmosis and plant transport are crucial processes in plant biology. This guide covers the definition of osmosis, its effects on plant and animal cells, transpiration, factors affecting transpiration, and methods to measure water loss in plants. What is osmosisand... Show more
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This page discusses the effects of osmosis on animal cells and introduces the concept of transpiration in plants.
Osmosis in Animal Cells: When water moves into an animal cell, its volume increases, stretching the cell membrane. If this continues, the cell membrane may eventually split, causing cell lysis.
Vocabulary: Cell lysis is the bursting of a cell due to excessive water intake through osmosis.
Transpiration: Transpiration is defined as the evaporation of water from mesophyll cells, followed by diffusion through leaf air spaces and stomata.
Definition: Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems, and flowers.
Factors Affecting Transpiration Rate:
Highlight: Factors affecting transpiration rate in plants include temperature, wind speed, humidity, and light intensity.
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This page covers the various uses of water in plants and introduces methods for measuring transpiration.
Uses of Water in Plants:
Example: Water provides structural support to plants through turgor pressure, which keeps cells firm and maintains plant shape.
Measuring Transpiration:
Highlight: The potometer is a device used to measure the rate of water uptake in a cut plant shoot, which can be used as an indicator of transpiration rate.
Vocabulary: A potometer is an instrument used to measure the rate of water uptake of a leafy shoot.
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This page discusses additional methods for measuring water loss in plants, focusing on the washing line method.
The Washing Line Method:
Example: The washing line method can be used to compare water loss in leaves exposed to different light intensities or wind speeds.
Highlight: The washing line method provides a simple yet effective way to compare how light intensity affects the rate of transpiration or how other environmental factors impact water loss in plants.
This method allows for direct comparison of water loss under various environmental conditions, making it valuable for studying factors affecting transpiration in plants.
Vocabulary: Transpiration rate is the speed at which water evaporates from the aerial parts of a plant.
Understanding these methods of measuring water loss is crucial for studying plant physiology and the effects of osmosis in plant cells. These techniques help researchers and students investigate how different environmental factors influence plant water relations and overall plant health.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page introduces the concept of osmosis and its role in plant transport.
Osmosis is defined as the movement of water from a dilute solution to a more concentrated solution through a selectively permeable membrane. The page includes a diagram illustrating this process, showing water molecules moving from a dilute solution to a concentrated solution.
Definition: Osmosis is the movement of water from a dilute solution to a more concentrated solution through a selectively permeable membrane.
The page also covers the effects of osmosis on plant cells:
Highlight: Turgor pressure in plants is crucial for maintaining cell structure and preventing excessive water intake.
Vocabulary: Plasmolysis is the condition where a plant cell loses too much water, causing the cell contents to shrink and the cell membrane to pull away from the cell wall.
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This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
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This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
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Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
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I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
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