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AQA Biology GCSE 6 Marker Questions WJEC PDF & More

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Amani

16/05/2023

Biology

Biology GCSE 6 markers QER

AQA Biology GCSE 6 Marker Questions WJEC PDF & More

The document covers key topics in GCSE Biology, focusing on cells, enzymes, and respiration. It provides detailed explanations and examples for 6-mark questions, which are crucial for AQA biology GCSE 6 marker questions WJEC and WJEC GCSE Biology past papers. The content is particularly useful for students preparing for AQA GCSE Biology Paper 1 6 mark questions.

Key points:

  • Detailed explanations of diffusion and osmosis
  • In-depth discussion on how temperature affects enzyme activity and how pH affects enzyme activity
  • Comprehensive description of plant nutrient uptake
  • Step-by-step guide for preparing microscope slides
  • Thorough explanation of inhalation and exhalation processes
  • Analysis of the bell jar model for respiration
...

16/05/2023

749

Possible QER Questions (Biology)
1.1 cells and movement across membranes.
Describe the similanties and differences between diffusion and osm

View

Microscope Slide Preparation and Respiratory System

This section provides detailed instructions for preparing microscope slides to observe cheek and onion cells, a common practical exercise in GCSE Biology 6 mark questions AQA pdf.

For cheek cells:

  1. Place a drop of methylene blue on a glass slide
  2. Gently rub the inside of your cheek with a cotton bud
  3. Wipe the cotton bud into the methylene blue on the slide
  4. Lower a coverslip onto the slide using a mounted needle
  5. Examine using a light microscope with a 40x objective lens

For onion cells:

  1. Peel a thin layer of epidermis from a freshly cut onion
  2. Place the epidermis on a slide and add a drop of iodine
  3. Lower a coverslip and examine with a 40x objective lens

The document then transitions to the respiratory system, explaining the processes of inhalation and exhalation. This topic is frequently featured in WJEC question bank and AQA GCSE Biology Paper 1 6 mark questions.

Vocabulary: Intercostal muscles - muscles between the ribs that assist in breathing.

During inhalation:

  • Intercostal muscles contract, moving the rib cage up and out
  • The diaphragm contracts and flattens, moving down
  • The thorax volume increases, decreasing pressure and drawing air in

During exhalation, these processes are reversed.

Possible QER Questions (Biology)
1.1 cells and movement across membranes.
Describe the similanties and differences between diffusion and osm

View

The Bell Jar Model of Respiration

This section explains how the bell jar model illustrates inhalation, a common topic in WJEC GCSE Biology past papers. The model uses everyday objects to represent parts of the respiratory system:

  • Glass tube represents the trachea
  • Balloons represent the lungs
  • Glass jar represents the rib cage
  • Rubber sheet represents the diaphragm

Highlight: Understanding the limitations of this model is crucial for answering higher-level questions in GCSE Biology 6 mark questions AQA pdf.

Limitations of the model include:

  • The diaphragm rubbersheetrubber sheet is pulled down further than it would be in reality
  • The jar does not move up and out like the rib cage does
  • Intercostal muscles are not represented
  • The rubber sheet must be manually pushed down, unlike the automatic contraction of the diaphragm

This section provides valuable insight into how scientific models are used to explain biological processes, a key skill tested in WJEC Biology past papers and AQA GCSE Biology Paper 1 6 mark questions.

Possible QER Questions (Biology)
1.1 cells and movement across membranes.
Describe the similanties and differences between diffusion and osm

View

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Biology

749

16 May 2023

4 pages

AQA Biology GCSE 6 Marker Questions WJEC PDF & More

user profile picture

Amani

@amani_uwwf

The document covers key topics in GCSE Biology, focusing on cells, enzymes, and respiration. It provides detailed explanations and examples for 6-mark questions, which are crucial for AQA biology GCSE 6 marker questions WJEC and WJEC GCSE Biology past... Show more

Possible QER Questions (Biology)
1.1 cells and movement across membranes.
Describe the similanties and differences between diffusion and osm

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Microscope Slide Preparation and Respiratory System

This section provides detailed instructions for preparing microscope slides to observe cheek and onion cells, a common practical exercise in GCSE Biology 6 mark questions AQA pdf.

For cheek cells:

  1. Place a drop of methylene blue on a glass slide
  2. Gently rub the inside of your cheek with a cotton bud
  3. Wipe the cotton bud into the methylene blue on the slide
  4. Lower a coverslip onto the slide using a mounted needle
  5. Examine using a light microscope with a 40x objective lens

For onion cells:

  1. Peel a thin layer of epidermis from a freshly cut onion
  2. Place the epidermis on a slide and add a drop of iodine
  3. Lower a coverslip and examine with a 40x objective lens

The document then transitions to the respiratory system, explaining the processes of inhalation and exhalation. This topic is frequently featured in WJEC question bank and AQA GCSE Biology Paper 1 6 mark questions.

Vocabulary: Intercostal muscles - muscles between the ribs that assist in breathing.

During inhalation:

  • Intercostal muscles contract, moving the rib cage up and out
  • The diaphragm contracts and flattens, moving down
  • The thorax volume increases, decreasing pressure and drawing air in

During exhalation, these processes are reversed.

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

The Bell Jar Model of Respiration

This section explains how the bell jar model illustrates inhalation, a common topic in WJEC GCSE Biology past papers. The model uses everyday objects to represent parts of the respiratory system:

  • Glass tube represents the trachea
  • Balloons represent the lungs
  • Glass jar represents the rib cage
  • Rubber sheet represents the diaphragm

Highlight: Understanding the limitations of this model is crucial for answering higher-level questions in GCSE Biology 6 mark questions AQA pdf.

Limitations of the model include:

  • The diaphragm rubbersheetrubber sheet is pulled down further than it would be in reality
  • The jar does not move up and out like the rib cage does
  • Intercostal muscles are not represented
  • The rubber sheet must be manually pushed down, unlike the automatic contraction of the diaphragm

This section provides valuable insight into how scientific models are used to explain biological processes, a key skill tested in WJEC Biology past papers and AQA GCSE Biology Paper 1 6 mark 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

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

Cells and Movement Across Membranes

This section focuses on the similarities and differences between diffusion and osmosis, crucial concepts in WJEC GCSE Biology topics.

The explanation highlights that both diffusion and osmosis are passive processes involving the movement of particles from high to low concentration. However, osmosis specifically refers to the movement of water particles through a selectively permeable membrane, while diffusion can involve various particles and doesn't require a membrane.

Example: Diffusion occurs in alveoli where oxygen moves from the alveolar walls into the bloodstream through capillaries. Osmosis takes place in plant root hair cells, where water from the soil enters the cell.

The document also covers the effect of temperature on enzyme activity and effect of pH on enzyme activity, which are common topics in WJEC Biology past papers.

Definition: An enzyme is a protein catalyst that speeds up chemical reactions in living organisms.

As temperature increases, enzymes gain more kinetic energy, leading to more successful molecular collisions and faster reactions. However, excessive heat can denature the enzyme's active site, reducing or stopping product formation.

Highlight: Enzymes have an optimum temperature and pH at which they function most effectively.

The section concludes with a description of how plants take up nutrients from the soil, emphasizing the role of active transport and the energy ATPATP required for this process.

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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

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