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12 Jan 2023
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Nat 5: Ecosystems, Biodiversity, and Photosynthesis Study Guide - Free PDF & Quizlet
ella
@ellataylorx
Photosynthesis
This section delves into the process of photosynthesis, which is crucial for understanding energy flow in ecosystems. It explains the basic concept, stages, and factors affecting the rate of photosynthesis.
Photosynthesis is the process by which green plants make their own food using energy from sunlight. The guide provides the word equation for photosynthesis:
Quote: carbon dioxide + water → glucose + oxygen
The process occurs in two main stages:
- Light reactions: Uses light to produce hydrogen and ATP
- Carbon fixation: A series of enzyme-controlled reactions resulting in glucose production
Vocabulary: ATP is a high-energy molecule used to transport energy within cells.
The guide explains how light energy is trapped by chlorophyll in chloroplasts and converted into chemical energy to generate ATP. It also discusses carbon fixation, where hydrogen from stage one combines with carbon dioxide to produce glucose using ATP for energy.
Highlight: Factors affecting the rate of photosynthesis include temperature, light intensity, and carbon dioxide concentration.
This section provides a clear understanding of the photosynthesis equation and the limiting factors of photosynthesis, which is essential for students studying photosynthesis bbc bitesize KS3 or preparing for National 5 Biology Life on Earth past paper questions.
Energy and Food Production
This section focuses on energy transfer in ecosystems and methods to increase food production. It explains how energy is lost in food chains and introduces concepts such as pyramids of numbers and energy.
Energy is lost in ecosystems through heat, movement, and undigested material. The guide introduces pyramids of numbers and energy to visualize the flow of energy in food chains.
Example: A pyramid of numbers showing organisms at each stage of a food chain: 200 Lettuces → 50 Slugs → 8 Frogs → 1 Heron
Highlight: An irregular pyramid of numbers can occur when the food chain involves a large producer or a parasite.
The guide discusses methods to increase food yield, including:
- Using fertilizers
- Applying pesticides
- Introducing GM crops
- Implementing biological control
Definition: Eutrophication is the ecosystem's response to the addition of artificial or natural substances, such as nitrates from fertilizers or sewage, to a water system.
This section provides valuable information for students studying National 5 Biology food production and energy transfer in ecosystems a level Biology. It also introduces concepts related to pyramid of biomass and pyramid of energy, which are essential for understanding energy flow in ecosystems.
Evolution
The final section introduces basic concepts in evolution, focusing on mutations and variation within species. This provides a foundation for understanding how species adapt and change over time.
Definition: A mutation is a random change in genetic material. Mutations can be neutral, advantageous, or disadvantageous to survival.
The guide lists factors that increase the rate of mutation:
- Radiation
- Certain chemicals
It also introduces the concept of variation within species, explaining that there is usually a great deal of variation between individuals of the same species.
This section, although brief, provides an important link between ecology and evolution, helping students understand how ecosystems and species change over time. It sets the stage for more advanced topics in biology and prepares students for questions related to adaptation and natural selection in their National 5 Biology Life on Earth past paper questions.
Ecosystems and Biodiversity
This section introduces key ecological concepts and terminology essential for understanding ecosystems and biodiversity. It covers the components of ecosystems, species, populations, and niches.
An ecosystem comprises all living things in an area interacting with each other and their non-living environment. It consists of two main parts: habitat and community. The guide defines important terms such as species, population, and niche.
Definition: A species is a group of organisms that can interbreed to produce fertile offspring.
Vocabulary: Biodiversity refers to the variety of life found on Earth.
The section also explains different types of organisms in an ecosystem:
- Producers: organisms that make their own food
- Consumers: animals that eat ready-made food for energy
- Predators: animals that hunt other animals for food
- Prey: animals that are hunted for food
Example: A food chain showing energy flow: grass → caterpillar → sparrow → bird of prey
The guide discusses competition in ecosystems, both interspecific and intraspecific . It outlines resources that animals and plants compete for, such as food, territory, water, and light.
Highlight: Abiotic factors affecting ecosystems include temperature, pH, moisture, and light intensity, while biotic factors include disease, grazing, and predation.
This comprehensive overview provides students with a solid foundation for understanding ecosystems bbc bitesize KS3 and prepares them for more advanced topics in biology.
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
App Store
4.8/5
Google Play
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
iOS user
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
iOS user
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
Android user
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
iOS user
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
iOS user
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
iOS user
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
Android user
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
iOS user
Nat 5: Ecosystems, Biodiversity, and Photosynthesis Study Guide - Free PDF & Quizlet
ella
@ellataylorx
The Nat 5 ecosystems biodiversity and competition study guide pdf provides a comprehensive overview of key ecological concepts. It covers ecosystems, biodiversity, competition, photosynthesis, energy flow, food production, and evolution. The guide is an essential resource for students studying National... Show more
Photosynthesis
This section delves into the process of photosynthesis, which is crucial for understanding energy flow in ecosystems. It explains the basic concept, stages, and factors affecting the rate of photosynthesis.
Photosynthesis is the process by which green plants make their own food using energy from sunlight. The guide provides the word equation for photosynthesis:
Quote: carbon dioxide + water → glucose + oxygen
The process occurs in two main stages:
- Light reactions: Uses light to produce hydrogen and ATP
- Carbon fixation: A series of enzyme-controlled reactions resulting in glucose production
Vocabulary: ATP is a high-energy molecule used to transport energy within cells.
The guide explains how light energy is trapped by chlorophyll in chloroplasts and converted into chemical energy to generate ATP. It also discusses carbon fixation, where hydrogen from stage one combines with carbon dioxide to produce glucose using ATP for energy.
Highlight: Factors affecting the rate of photosynthesis include temperature, light intensity, and carbon dioxide concentration.
This section provides a clear understanding of the photosynthesis equation and the limiting factors of photosynthesis, which is essential for students studying photosynthesis bbc bitesize KS3 or preparing for National 5 Biology Life on Earth past paper questions.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Energy and Food Production
This section focuses on energy transfer in ecosystems and methods to increase food production. It explains how energy is lost in food chains and introduces concepts such as pyramids of numbers and energy.
Energy is lost in ecosystems through heat, movement, and undigested material. The guide introduces pyramids of numbers and energy to visualize the flow of energy in food chains.
Example: A pyramid of numbers showing organisms at each stage of a food chain: 200 Lettuces → 50 Slugs → 8 Frogs → 1 Heron
Highlight: An irregular pyramid of numbers can occur when the food chain involves a large producer or a parasite.
The guide discusses methods to increase food yield, including:
- Using fertilizers
- Applying pesticides
- Introducing GM crops
- Implementing biological control
Definition: Eutrophication is the ecosystem's response to the addition of artificial or natural substances, such as nitrates from fertilizers or sewage, to a water system.
This section provides valuable information for students studying National 5 Biology food production and energy transfer in ecosystems a level Biology. It also introduces concepts related to pyramid of biomass and pyramid of energy, which are essential for understanding energy flow in ecosystems.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Evolution
The final section introduces basic concepts in evolution, focusing on mutations and variation within species. This provides a foundation for understanding how species adapt and change over time.
Definition: A mutation is a random change in genetic material. Mutations can be neutral, advantageous, or disadvantageous to survival.
The guide lists factors that increase the rate of mutation:
- Radiation
- Certain chemicals
It also introduces the concept of variation within species, explaining that there is usually a great deal of variation between individuals of the same species.
This section, although brief, provides an important link between ecology and evolution, helping students understand how ecosystems and species change over time. It sets the stage for more advanced topics in biology and prepares students for questions related to adaptation and natural selection in their National 5 Biology Life on Earth past paper questions.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Ecosystems and Biodiversity
This section introduces key ecological concepts and terminology essential for understanding ecosystems and biodiversity. It covers the components of ecosystems, species, populations, and niches.
An ecosystem comprises all living things in an area interacting with each other and their non-living environment. It consists of two main parts: habitat and community. The guide defines important terms such as species, population, and niche.
Definition: A species is a group of organisms that can interbreed to produce fertile offspring.
Vocabulary: Biodiversity refers to the variety of life found on Earth.
The section also explains different types of organisms in an ecosystem:
- Producers: organisms that make their own food
- Consumers: animals that eat ready-made food for energy
- Predators: animals that hunt other animals for food
- Prey: animals that are hunted for food
Example: A food chain showing energy flow: grass → caterpillar → sparrow → bird of prey
The guide discusses competition in ecosystems, both interspecific and intraspecific . It outlines resources that animals and plants compete for, such as food, territory, water, and light.
Highlight: Abiotic factors affecting ecosystems include temperature, pH, moisture, and light intensity, while biotic factors include disease, grazing, and predation.
This comprehensive overview provides students with a solid foundation for understanding ecosystems bbc bitesize KS3 and prepares them for more advanced topics in biology.
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
App Store
4.8/5
Google Play
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
iOS user
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
iOS user
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
Android user
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
iOS user
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
iOS user
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
iOS user
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
Android user
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
iOS user