Ib biology Guías de estudio, Notas de estudios & Resúmenes
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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
- Examen • 47 páginas • 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 HL Questions and Answers Already Passed
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IB Biology HL Questions and Answers 
 
Already Passed 
 
What are the characteristics common to all forms of life? reproduction, carbon, responds to 
surroundings, Growth and Development, cellular organization, and energy 
 
What are the levels of biological organization from simple to most complex? Molecules, cell, 
tissue, organ, organism, population, community, ecosystem, biosphere 
 
What are the 4 most common types of biological molecules? Proteins, nucleic acids, 
carbohydrates, and lipids...
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IB Biology Unit 1 Latest Update Graded A+
- Examen • 18 páginas • 2024
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IB Biology Unit 1 Latest Update 
 
Graded A+ 
 
Cell theory 3 main principles All organisms are composed of one or more cells 
cells are the smallest units of life 
all cells come from pre-existing cells 
 
7 functions of life (MR H GREN) 
metabolism 
reproduction 
homeostasis 
growth 
excretion 
 
response 
nutrition 
 
Paramecium unicellular membrane of the kingdom known as Protista. Look at powerpoint on 
isa247 to see how this organism displays the functions of life. 
 
chlorella single-cell...
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All IB Biology Processes Latest Update with Verified Solutions
- Examen • 84 páginas • 2024
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All IB Biology Processes Latest Update 
 
with Verified Solutions 
 
Stem Cell Therapy 1. triggering the differentiation of stem cells into desired cell type 
2. surgical implantation of differentiated cells into patients tissue 
3. suppression of immune system so they do not get destroyed 
4. monitoring so they are not cancerous 
 
eg. Stagardt's Disease (old retina cells --> new retina cells) 
Leukemia (bone marrow transplant) 
 
Somatic cell nuclear transfer - creation of embryonic clones...
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IB Biology Exam 2024 with 100% correct answers
- Examen • 38 páginas • 2023
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How do you calculate the magnification of a drawing/image? - correct answer Magnification=Image size(with ruler) / Actual size(according to scale bar) 
 
How do you calculate the actual size of a magnified specimen? - correct answer Actual size=Image size(with ruler) / magnification 
 
By which process do potassium ions move through potassium channels in axons? - correct answer Facilitated diffusion 
-at rest, the Na-K+ pump expels Na+ ions out of cell, while K+ are put within 
-when the n...
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AQA GCSE COMBINED SCIENCE: TRILOGY 8464/B/2H Higher Tier Biology Paper 2H Question Paper + Mark scheme [MERGED] June 2022 *jun228464b2h01* IB/M/Jun22/E10 8464/B/2H For Examiner’s Use Question Mark 1 2 3
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IB Biology HL exam 2024 with 100% correct answers
- Examen • 40 páginas • 2023
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What are the characteristics common to all forms of life? - correct answer reproduction, carbon, responds to surroundings, Growth and Development, cellular organization, and energy 
 
What are the levels of biological organization from simple to most complex? - correct answer Molecules, cell, tissue, organ, organism, population, community, ecosystem, biosphere 
 
What are the 4 most common types of biological molecules? - correct answer Proteins, nucleic acids, carbohydrates, and lipids 
 ...
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IB Biology Ch2 Molecular Biology Latest Update 100% Correct
- Examen • 11 páginas • 2024
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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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IB Biology Year 1 Review with Complete Solutions
- Examen • 10 páginas • 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 Chapter 2 Latest 2024 Graded A+
- Examen • 11 páginas • 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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