Ib biology Study guides, Class notes & Summaries
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IB Biology Ch2 Molecular Biology Latest Update 100% Correct
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IB Biology Ch2 Molecular Biology Latest 
 
Update 100% Correct 
 
Most common elements found in living organisms 
Carbon, Hydrogen, Oxygen, Nitrogen. 
Organic molecules 
Compounds that contain atleast two Carbon 
Inorganic molecules 
Compounds that do not contain Carbon 
Monomers 
Small subunits 
 
Polymers 
When many monomers are bonded together 
Monosaccharides 
Single sugars made up of just one subunit. 
Disaccharides 
Are sugars that have two subunits linked together by a condensation reacti...
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AQA GCSE BIOLOGY 8461/1H Paper 1 Higher Tier Question Paper + Mark scheme [MERGED] June 2022 *JUN2284611H01* IB/M/Jun22/E20 8461/1H For Examiner’s Use Question Mark 1
- Exam (elaborations) • 72 pages • 2023
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AQA 
GCSE 
BIOLOGY 
8461/1H 
Paper 1 Higher Tier 
Question Paper + Mark scheme [MERGED] 
June 2022 
 
*JUNH01* 
IB/M/Jun22/E20 8461/1H 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
TOTAL 
Time allowed: 1 hour 45 minutes 
Materials 
For this paper you must have: 
• a ruler 
• a scientific calculator. 
Instructions 
• Use black ink or black ball-point pen. 
• Pencil should only be used for drawing. 
• Fill in the boxes at the top of this page. 
• Answer all questions in th...
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AQA AS BIOLOGY 7401/1 Paper 1 Version: 1.0 Final *JUN237401101* IB/M/Jun23/E8 7401/1/ QUESTION PAPER & MARKING SCHEME/ [MERGED] Marl( scheme June 2023
- Exam (elaborations) • 47 pages • 2024
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AQA 
AS 
BIOLOGY 
7401/1 
Paper 1 
Version: 1.0 Final 
*JUN* 
IB/M/Jun23/E8 7401/1 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
8 
9 
TOTAL 
Monday 15 May 2023 Morning Time allowed: 1 hour 30 minutes 
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 in t...
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IB Biology Year 1 Review with Complete Solutions
- Exam (elaborations) • 10 pages • 2024
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IB Biology Year 1 Review with Complete 
Solutions 
ecology the study of relationships between living organisms and between organisms and 
their environment 
ecosystem a system made up of organisms as well as the abiotic factors in the area 
population a group of organisms of the same species who live in the same area at the same 
time 
community a group of populations living and interacting with each other in an area 
species a group of organisms which can interbreed and produce fertile offsprin...
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IB Biology HL Exam Review Latest Version Already Graded A
- Exam (elaborations) • 16 pages • 2024
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IB Biology HL Exam Review Latest 
Version Already Graded A 
 
Outline the cell theory. Living organisms are composed of cells. 
Cells are the smallest unit of life. 
Cells come from pre-existing cells. 
 
Discuss the evidence for the cell theory. The nature of scientific theories could be introduced 
here: the accumulation of evidence that allows a hypothesis to become a theory; whether a theory 
should be abandoned when there is evidence that it does not offer a full explanation; and what 
evid...
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IB Biology Chapter 2 Latest 2024 Graded A+
- Exam (elaborations) • 11 pages • 2024
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IB Biology Chapter 2 Latest 2024 
 
Graded A+ 
 
Vitalism Idea that living organisms are fundamentally different from non living things 
 
Most frequently occurring elements Oxygen 65% 
Carbon 19% 
Hydrogen 10% 
Nitrogen 3% 
 
Other elements Calcium 1.5% 
 
Phosphorus 1% 
Iron 0.7% 
Sulfur 0.25% 
Sodium 0.15% 
 
Molecular biology Science that aims to explain living processes in terms of chemical 
substances 
 
Synthesis of urea Discovered in human urine in the 18th century 
Organic compound synt...
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IB Biology Topic 2: Molecular Biology Latest Update Graded A+
- Exam (elaborations) • 10 pages • 2024
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IB Biology Topic 2: Molecular Biology 
 
Latest Update Graded A+ 
 
How many bonds can carbon make carbon can make four covalent bonds 
 
Four most common compounds - carbon 
-hydrogen 
-nitrogen 
-oxygen 
 
what is life based on carbon compounds 
 
metabolism metabolism- chemical processes in the body, synthesis & breakdown of 
substances in living organisms. 
 
anabolism- the synthesis of complex molecules (simple to complex) (condensation reaction) 
catabolism- the breakdown of complex molecu...
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IB Biology Topic 4 : Ecology Latest Version Graded A+
- Exam (elaborations) • 11 pages • 2024
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IB Biology Topic 4 : Ecology Latest 
 
Version Graded A+ 
 
Ecology The science of the relationships between organisms and their environments. 
 
Organism an individual living thing that uses energy, reproduces, responds, grows, and 
develops 
 
Species a group of similar organisms that can breed and produce fertile offspring 
 
Population group of individuals of the same species that live in the same area 
 
Community all living, or biotic, things in an area 
 
Ecosystem all biotic (living) and...
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IB Biology Topic 1: Cell Biology Latest Update Graded A
- Exam (elaborations) • 9 pages • 2024
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IB Biology Topic 1: Cell Biology Latest 
 
Update Graded A 
 
Cell theory The theory that cells form the fundamental structural and functional units of all 
living organisms. 
 
Differentiation The expression of a particular gene(s) and not others in order for cell 
specialisation. 
 
Emergent properties The idea that the sum of an organism is more than the parts interacting 
and combining. Living things become more complex as they move (from individual cells to 
organ systems). 
 
Multicellular...
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IB Biology - 1.1 Introduction to Cells Questions and Answers Graded A+
- Exam (elaborations) • 16 pages • 2024
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IB Biology - 1.1 Introduction to Cells 
Questions and Answers Graded A+ 
 
Main components of cell theory 1. All living things are made up of one or more cells 
2. All cells come from pre-existing cells 
3. Cells are the fundamental building blocks of all living organisms 
 
Smaller organisms are what type of cellular? Unicellular 
 
Larger organisms are what type of cellular? Multicellular 
 
Common features of cells? 1. Every cell is surrounded by a membrane, which separates the 
cell contents...
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