Ib biology topic 3 - 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 Topic 3 Questions With Answers...

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 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...

A-level PSYCHOLOGY Paper 3 Issues and options in psychology Time allowed: 2 hours Materials For this paper you must have: • an AQA 16-page Answer Book. You may use a calculator. Instructions • Use black ink or black ball-point pen. • Write the information required on the front of your answer book. The Paper Reference is 7182/3. • In Section A, you should answer all questions. • In Section B, choose one topic. Answer all questions on the topic you choose. • In Section...

IB Biology Topic 1: Cell Biology Questions and Answers Already Passed What does cell theory state? That cells are the smallest possible unit of life and that living organisms are made up of cells. What are unicellular organisms? Give two examples Unicellular organisms are organisms with only one cell, such as Paramecium and Chlamydomonas. In unicellular organisms the one cell carries out all of the functions of life. Why are large organisms multicellular? Because of surface area to ...

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 HL Topic 8 Latest Version Graded A+ Oxidation involves the loss of electrons from an element; frequently involves gaining oxygen or losing hydrogen Reduction involves a gain of electrons; frequently involves losing oxygen or gaining hydrogen Glycolysis first stage of cell respiration; in the cytoplasm, one hexose sugar is converted into 2 3-carbon atom compounds (pyruvate) with a net gain of 2 ATP and 2 NADH + H Phosphorylation 2 phosphate groups are added to a molec...

IB BIOLOGY TOPIC 3 GENETICS COMPLETE STUDY GUIDE 2023. HKEXCEL LTD. 1 Topic 3.1 – Genes Genetics x It is the study of variation and inheritance. The basic unit of inheritance is a gene. Gene x A gene is defined as a heritable factor that controls a specific characteristic for an organism, or a section of DNA that codes for the formation of a polypeptide. x A gene occupies a specific position on a chromosome. x A typical animal or plant cell nucleus contains thousands of genes. The ...