Ib biology topic 5 - Study guides, Class notes & Summaries

Concise study notes from 2022 IB HL Biology. Attained a Level 7 in exam. CORE: Topic 1: Cell Biology Topic 2: Molecular Biology Topic 3: Genetics Topic 4: Ecology Topic 5: Evolution and Biodiversity Topic 6: Human Physiology ADDITIONAL HIGHER LEVEL: Topic 7: Nucleic Acids Topic 8: Metabolism, Cell Respiration and Photosynthesis Topic 9: Plant Biology Topic 10: Genetics and Evolution Topic 11: Animal Physiology

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...

Define continuous variation - The variation in phenotypic traits, such as body weight or height, in which a series of types are distributed on a continuum rather than grouped into discrete categories. Define Evolution (Heritable, cumulative, population) - The process of cumulative change in heritable characteristics of a population -Heritable: Changes must be passed on genetically from one generation to the next -Cumulative: Stresses fact that 1 change not enough to have a major impact on a...

IB Biology HL Topic 7 Latest 2024 Graded A DNA structure antiparallel strands, 3'-5' linkages, and H bonding between purines and pyrimidines Nucleosomes consist of DNA wrapped around 3 histone proteins and are held together by another histone protein Nucleosomes help to supercoil chromosomes and help to regulate transcription Unique (single-copy) genes are translated and constitute a surprisingly small proportion of eukaryotic DNA Highly repetitive sequences constitute 5-4...

IB Biology - Topic 3 – Genetics Latest 2024 Graded A+ Define gene. A heritable factor that consists of a length of DNA (not an entire chromosome) and influences a specific characteristic Define allele. Various forms of a gene Define locus. The position a gene occupies on one type of chromosome Define genome. The whole genetic information of an organism How do alleles differ from one another? By a few differences in DNA base sequence What is the genome size (million base p...

IB Biology Topic 1 Written Exam Questions Correctly Answered. Cell Theory - CORRECT ANSWER 1. All living things are composed of cells 2.The Cell in the fundamental unit of life 3. Cells only arise from pre-existing cells Striated Muscle - CORRECT ANSWER Long Cells, (300 mm), multiple nuclei, questions cell theory Acetate Fungal Hyphae - CORRECT ANSWER challenges idea that cell is a single unit, multi-nucleated, and continuous cytoplasm. Cell walls composed of Chitin giant algae ...

IB Biology Topic 5 Evolution summary to help study for the IB exams

IB BIOLOGY TOPIC 1 CELL BIOLOGY QUESTIONS AND ANSWERS COMPLETE STUDY GUIDE 2023 IB Biology Topic 1: Cell Biology 1. Cell theory: The theory that cells form the fundamental structural and functional units of all living organisms. 2. Differentiation: The expression of a particular gene(s) and not others in order for cell specialisation. 3. 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...

IB Biology handwritten notes (topic 2-5 from the IB Biology book)

The notes for the IB course of Biology - TOPIC 4 & 5 ECOLOGY AND EVOLUTION - by an IB student of M22 achieving 45 points (7 for Biology predicted and achieved). Notes are handwritten and organized by subchapter. All you need to achieve a 7 in IB Biology is contained within the note-set for this chapter. Contains only relevant information that gets asked in exams and topic tests - summarized from the Companion Course-books (Pearson and Oxford). Perfect for revision purposes and final IB exams.