Eukaryotes have a compartmentalized cell structure.Prokaryotes have a simple cell structure without compartmentalization. The capacity of stem cells to divide and differentiate along different pathways is necessary in embryonic development and also makes stem cells suitable for therapeutic uses.Differentiation involves the expression of some genes and not others in a cell's genome.Specialized tissues can develop by cell differentiation in multicellular organisms.Multicellular organisms have properties that emerge from the interaction of their cellular components.Surface area to volume ratio is important in the limitation of cell size.Organisms consisting of only one cell carry out all functions of life in that cell.According to the cell theory, living organisms are composed of cells.Topic 1: Cell Biology-15 Hours for Both SL and HL Subtopic Both classes cover the same six topics in the order listed below with the same subtopics listed below: Stay up to date with the latest information on what this means for IB diplomas, course credit for IB classes, and more with our our IB COVID-19 FAQ article.īoth IB Biology SL and HL consist of the same core requirements (95 hours). May 2022 IB assessments will have two routes, exam and non-exam, depending on which your school chooses. In this article, I will go over the topics covered in IB Biology Standard Level and IB Biology Higher Level, as well as the number of hours dedicated to each topic along with what the IB expects you to understand for each topic.īecause of the ongoing COVID-19 (coronavirus) pandemic, the IB has decided to extend the adaptations which were put in place for 2021 to 2022. If you are looking at this syllabus, you're likely interested in taking the course or are currently enrolled in the course. I took IB Biology SL back in my high school days.
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