Ib biology evolution Guías de estudio, Notas de estudios & Resúmenes
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AQA A-level BIOLOGY 7402/1 Paper 1 Version: 1.0 Final *jun237402101* IB/M/Jun23/E9 7402/1QUESTION PAPER & MARKING SCHEME/ [MERGED] Marl( scheme June 2023
- Examen • 64 páginas • 2024
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AQA 
A-level 
BIOLOGY 
7402/1 
Paper 1 
Version: 1.0 Final 
*jun* 
IB/M/Jun23/E9 7402/1 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
TOTAL 
Wednesday 7 June 2023 Afternoon Time allowed: 2 hours 
Materials 
For this paper you must have: 
• a ruler with millimetre measurements 
• a scientific calculator. 
Instructions 
• Use black ink or black ball-point pen. 
• Fill in the boxes at the top of this page. 
• Answer all questions. 
• You must answer the questions...
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IB Biology HL Option A.4 Questions and Answers Already Passed
- Examen • 6 páginas • 2024
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IB Biology HL Option A.4 Questions and 
 
Answers Already Passed 
 
What is innate behaviour? Provide an example. 
inherited from parents and develops independently of environment as it is unaffected by animal's 
experiences e.g. palmer grasp reflex in babies 
How can innate behaviour change? What is the rate of change? 
- can change through evolution via natural selection 
- rate of change much slower than with learned behaviour 
Describe how invertebrate experiments can be conducted to observ...
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IB Biology - Evolution (5.4 & Option D) SL/HL Exam / Revised Questions and Answers / Sure A+
- Examen • 30 páginas • 2024
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2 Requirements for Evolution - 1) A source of variation between individuals of one species (can be 
from mutations, crossing over, & independant assortment during cell division). 
2) A change in the frequency of the genes in a gene pool of a population (due to natural selection). 
Adaptive Radiation - The condition in which homologous structures are differentiated to perform 
a variety of different functions. 
- As speciation occurs, a particular structure may change to become adapted to a speci...
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IB Biology- Unit 5- Evolution and Biodiversity Exam Questions With Complete Solutions
- Examen • 5 páginas • 2023
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IB Biology- Unit 5- Evolution and Biodiversity Exam Questions With Complete Solutions...
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UWCSEA IB Biology 2025 - A2.1 Origins of Cells with Complete Solutions
- Examen • 4 páginas • 2024
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UWCSEA IB Biology 2025 - A2.1 Origins 
of Cells with Complete Solutions 
 
A2.1.1—What were the conditions on early Earth? What pre-biotic (pre-life) carbon compounds 
were present? 
there was a lack of free oxygen; 
and therefore no ozone to protect from UV radiation; so high levels of UV penetrated and 
reached the Earth's surface; 
there were much higher concentrations of carbon dioxide; 
and methane; 
resulting in higher temperature; 
The conditions may have caused a variety of carbon com...
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IB Biology HL Option A.4 Questions and Answers Already Passed
- Examen • 6 páginas • 2024
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- $9.99
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IB Biology HL Option A.4 Questions and 
Answers Already Passed 
What is innate behaviour? Provide an example. 
inherited from parents and develops independently of environment as it is unaffected by animal's 
experiences e.g. palmer grasp reflex in babies 
How can innate behaviour change? What is the rate of change? 
- can change through evolution via natural selection 
- rate of change much slower than with learned behaviour 
Describe how invertebrate experiments can be conducted to observe be...
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IB biology past essay questions HL and SL all units and mark scheme 2023 (A+)
- Examen • 50 páginas • 2023
- Disponible en paquete
-
- $24.89
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IB biology past essay questions HL and 
SL all units and mark scheme 
2023 (A+) 
Outline what is meant by the trophic level of an organism with three examples from one 
named habitat. (4 max) - Answer-feeding level for an organism in a food chain 
naming of habitat (1 mark) 
naming three trophic levels correctly (1 mark) 
three examples forming a food chain from the named habitat (1 mark) 
2. Compare the ways in which autotrophic, heterotrophic and saprotrophic organisms 
obtain energy. (6 ma...
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IB biology past essay questions HL and SL all units and mark scheme 2023 (A+
- Examen • 50 páginas • 2023
-
- $13.99
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IB biology past essay questions HL and 
SL all units and mark scheme 
2023 (A+) 
Outline what is meant by the trophic level of an organism with three examples from one 
named habitat. (4 max) - Answer-feeding level for an organism in a food chain 
naming of habitat (1 mark) 
naming three trophic levels correctly (1 mark) 
three examples forming a food chain from the named habitat (1 mark) 
2. Compare the ways in which autotrophic, heterotrophic and saprotrophic organisms 
obtain energy. (6 ma...
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IB biology past essay questions HL and SL all units and mark scheme 2023 (A+)
- Examen • 50 páginas • 2023
- Disponible en paquete
-
- $16.99
- + aprende más y mejor
IB biology past essay questions HL and 
SL all units and mark scheme 
2023 (A+) 
Outline what is meant by the trophic level of an organism with three examples from one 
named habitat. (4 max) - Answer-feeding level for an organism in a food chain 
naming of habitat (1 mark) 
naming three trophic levels correctly (1 mark) 
three examples forming a food chain from the named habitat (1 mark) 
2. Compare the ways in which autotrophic, heterotrophic and saprotrophic organisms 
obtain energy. (6 ma...
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IB SL BIOLOGY TOPIC 4 ECOLOGY COMPLETE STUDY GUIDE 2023
- Examen • 8 páginas • 2023
- Disponible en paquete
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- $5.39
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IB BIOLOGY TOPIC 4 
ECOLOGY COMPLETE 
 STUDY GUIDE 2023 
Topic 4.1: Ecology – Species, communities and ecosystem 
The continued survival of living organisms including humans depends on sustainable communities. 
• Understanding: Species are groups of organisms that can potentially interbreed to produce fertile offspring. 
 Species: groups of organisms that can potentially interbreed to produce fertile off-springs 
 Crossbreeding: interbreeding between different species with off-springs ...
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