Aqa biology a level topic - Study guides, Class notes & Summaries
Looking for the best study guides, study notes and summaries about Aqa biology a level topic? On this page you'll find 411 study documents about Aqa biology a level topic.
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AQA A level Biology - Topic 2 (2022/2023) Rated A+
- Exam (elaborations) • 32 pages • 2024
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AQA A level Biology - Topic 2 
(2022/2023) Rated A+ 
What are the 2 main types of organism? Eukaryotes and prokaryotes 
What cells are eukaryotic? Animal, plant, algal, fungal 
Name the 11 organelles in an animal cell 1. Cell surface membrane 
2. Rough endoplasmic reticulum 
3. Smooth endoplasmic reticulum 
4. Lysosome 
5. Ribosome 
6. Golgi apparatus 
7. Mitochondria 
8. Nuclear envelope 
9, nucleolus 
10. Nucleus 
11. Cytoplasm
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AQA A-Level Biology Topic 1: Biological Molecules 2024/2025 Questions and Answers 100% Solved
- Exam (elaborations) • 22 pages • 2024
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AQA A-Level Biology Topic 1: Biological 
Molecules 2024/2025 Questions and 
Answers 100% Solved 
What are monomers? Monomers are *small units* which are the components of larger 
molecules. 
What are polymers? Polymers are molecules made from *many monomers* joined together. 
What are examples of monomers? *Monosaccharides, amino acids* and *nucleotides* 
What are examples of polymers? *Polysaccharides, polypeptides* and *polynucleotides* 
What reaction allows two monomers to bond together? A...
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AQA A-Level Biology - Topic 3 Questions and Answers 100% Solved
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AQA A-Level Biology - Topic 3 Questions 
and Answers 100% Solved 
Smaller organisms have a ........... surface area to volume ratio Higher 
How do single called organisms exchange substances? Diffuse directly into or out of the cell 
across the cell surface membrane 
Give 2 reasons why in multicellular organisms, diffusion across outer membrane would be too 
slow? 1. Some cells deep within body- big distance between them and outside 
2. Larger animals have low surface area to volume ratio- dif...
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AQA A level Biology - Topic 6 - survival and response questions and answers already passed
- Exam (elaborations) • 43 pages • 2024
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AQA A level Biology - Topic 6 - survival 
and response questions and answers 
already passed 
What is a stimulus? A change in the environment of an organism 
What is a tactic response? Directional movement in response to a stimulus 
What is a kinetic response? Non directional random movement in response to a stimulus 
What is a positive and negative taxis? Positive taxis- organism moves towards stimulus 
Negative taxis - organism moves away from stimulus 
What Are receptors? Detect stimuli- can ...
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AQA A-level Biology - Topic 4 Already Passed
- Exam (elaborations) • 34 pages • 2024
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AQA A-level Biology - Topic 4 Already 
Passed 
Define variation Differences that exist between individuals 
In what ways can variation be caused? It can be caused by genetic factors, such as alleles 
from mutations. 
It can also be caused by the environment, such as climate. 
Most variation is caused by a combination of genetic factors and environmental factors 
Why is it impossible to study a whole population? Because it is too large and would take too 
long. Instead, scientists use a sample th...
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AQA A-Level Biology - Topic 3 (2022/2023) with Verified Answers
- Exam (elaborations) • 23 pages • 2024
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AQA A-Level Biology - Topic 3 
(2022/2023) with Verified Answers 
Smaller organisms have a ........... surface area to volume ratio Higher 
How do single called organisms exchange substances? Diffuse directly into or out of the cell 
across the cell surface membrane 
Give 2 reasons why in multicellular organisms, diffusion across outer membrane would be too 
slow? 1. Some cells deep within body- big distance between them and outside 
2. Larger animals have low surface area to volume ratio- diffi...
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AQA A-Level Biology Topic 1: Biological Molecules (2022/2023) Already Passed
- Exam (elaborations) • 25 pages • 2024
- Available in package deal
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AQA A-Level Biology Topic 1: Biological 
Molecules (2022/2023) Already Passed 
What are monomers? Monomers are *small units* which are the components of larger 
molecules. 
What are polymers? Polymers are molecules made from *many monomers* joined together. 
What are examples of monomers? *Monosaccharides, amino acids* and *nucleotides* 
What are examples of polymers? *Polysaccharides, polypeptides* and *polynucleotides* 
What reaction allows two monomers to bond together? A *condensation reacti...
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AQA A-Level Biology Topic 3 Already Passed
- Exam (elaborations) • 30 pages • 2024
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AQA A-Level Biology Topic 3 Already 
Passed 
Why are Microorganisms able to perform exchange via their surface? • have a large surface 
area to volume ratio 
• have a short diffusion distance 
• have low demand 
How do Microorganisms Obtain Nutrients & Remove Waste? • by exchange via their surface 
• nutrients (e.g. glucose, oxygen) move in by diffusion via their surface 
• waste (e.g. carbon dioxide) move out by diffusion via their surface 
Why can't Animals/Plants perform exchange...
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AQA A LEVEL Biology A* ANKI FLASHCARDS. - LINK TO DOWNLOAD FLASHCARDS INCLUDED IN THE PDF DOCUMENT + INSTRUCTIONS ON HOW TO USE IT ALSO INCLUDED
- Other • 8 pages • 2023
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ANKI flashcards on every topic in A level Biology. 
Includes more than a 1000 FLASHCARDS 
Diagrams and Gifs included to make it easier to learn the flashcards and the content 
ALL AQA SPEC covered 
Guaranteed A* if you do these flashcards properly.
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AQA A-level Biology - Topic 4 Exam – Questions & Answers
- Exam (elaborations) • 16 pages • 2024
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AQA A-level Biology - Topic 4 Exam – Questions & Answers
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