Introduction to cell organelles

    • Cell organelles is a core JC1 topic in H2 BIO A levels. This topic is foundation to the entire H2 BIO syllabus. It explores the microscopic appearance of cells, it’s contents, their corresponding functions as well as their assigned names (plural/singular).

    Curated materials for cell organelles

    Most common phrasing errors made by students during exams

    • Nucleolus consists of DNA´╗┐
    • Lysosomes contain lysozymes
    • The nuclear envelop is a bilayer
    • Mitochondria are sites of respiration and they produce energy

    Exam tips

    • Centrioles are not found in most plants
    • Transport vesicles are different from secretory vesicles
    • Cisterna and crista refers to structures in different organelles
    • When asked to label, check arrow # and give appropriate singular or plural forms´╗┐
    • It is not important to contrast animal and plant cells anymore but one should understand and be able to describe what structures makes plants unique e.g. chloroplasts and cellulose
    • Glycosylation of proteins begin in the RER vs. lipids in GA. What happens to the glycoproteins in GA is further/final chemical modifications as well as packing and sorting
    • Finally, many students do not spend enough time contemplating the concept of cell theory. Make sure you do as the idea of viruses being non-living is built on this very concept.

    Questions and other matters

    • JOIN my classes so that you can have your questions answered. You will also be able to access TYS questions from different JCs in Singapore as well as my comments and recommended answers.
    • You can also register for my H2 BIO crash courses to get ready for exams. Here’s the SCHEDULE.
    • You may also be interested to know how to boost your performance for A levels.