IB Biology Study guides, Class notes & Summaries

AQA A-level BIOLOGY 7402/1 Paper 1 Question Paper + Mark scheme [MERGED] June 2022 *jun* IB/M/Jun22/E12 7402/1 For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 TOTAL Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature I declare this is my own work. Time allowed: 2 hours Materials For this paper you must have: • a ruler with millimetre measurements • a scientific calculator. Instructions • Use bl...

IB Biology Latest Update with Verified Solutions genotype the alleles of an organism phenotype the characteristic of an organism dominant allele an allele that has the same effect on the phenotype when present in both homozygous and heterozygous states co-dominant alleles pair of alleles that both affect the phenotype when present in a heterozygote recessive alleles an allele that only has an effect on the phenotype when in homologous state locus the particular position on...

IB Biology Review with Complete Solutions cell theory -All living things are composed of cells -cells come from preexisting cells -Cells are smallest unit of life Challenges to cell theory: muscle fibres -They are fused cells, so they're long and have multiple nucleus -challenges cells are autonomous units Challenges to cell theory: Giant algae -certain species may grow large -challenges idea cells are microscopic and larger organisms are composed of many Challenges ...

AQA A-level BIOLOGY 7402/2 Paper 2 Question Paper + Mark scheme [MERGED] June 2022 *jun* IB/M/Jun22/E12 7402/2 For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 TOTAL 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 i...

AQA GCSE BIOLOGY 8461/1H Paper 1 Higher Tier Version: 1.0 Final *jun2384611H01* IB/M/Jun23/E25 8461/1H For Examiner’s Use Question Mark 1 2 3 4 5 6 TOTAL Tuesday 16 May 2023 Morning 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 i...

IB Biology SL — Topic 1 • Cell Biology with Complete Solutions Cell theory 1. All living things are composed of cells 2. Cells are the smallest unit of life 3. Cells only arise from pre-existing cells Striated muscle cell Exception to cell theory! → Muscle cells fuse to form fibres that may be very long (>300mm) → Consequently, they have multiple nuclei despite being surrounded by a single, continuous plasma membrane → Challenges the idea that cells always funct...

2023 AQA A-level BIOLOGY 7402/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Candidate number I declare this is my own work. A-level BIOLOGY Paper 1 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 answ...

IB Biology semester 1 Latest Version Graded A+ Cells Smallest functional unit of an organism What are the principles of cell theory? 1. All living things are made of cells 2. Cells are smallest unit of life 3. Cells come from pre-existing cells What are the properties of life? Metabolism Reproduction Growth Response Excretion Homeostasis Nutrition Prokaryotic cells Single cell which has neither a distinct nucleus or organelles can be an organism (e.g. bacteria) Flage...

IB BIOLOGY - HUMAN PHYSIOLOGY QUESTIONS AND ANSWERS ALREADY PASSED What is injestion? Ingestion is eating food What is Digestion? Passage of smaller molecules from the digestive What is Absorption? Passage of smaller molecules from the digestive system into the bloodstream or lymphatic system What is transport? The delivery of small molecules to tissues by the circulatory system What is the alimentary canal? The alimentary canal consists of organs through which food actually...

IB Biology: Chapter 1 Latest 2024 Graded A+ cell theory - all living things are composed of cells - the cell is the smallest unit of life - cells only arise from pre-existing cells challenges to the cell theory - *striated muscle* challenges the idea that a cell has one nucleus - *giant algae* challenges the idea that cells must be simple in structure & small in size - *aseptate fungal hyphae* challenges the idea that a cell is a single unit functions of life - metabolism - r...