Pracitical: Identifying Mitosis in Plant Cells Growth in plants occurs in specific regions called meristems The root tip meristem can be used to study mitosis The root tip meristem can be found jus...
The Stages of Mitosis Mitosis is the process of nuclear division by which two genetically identical daughter nuclei are produced that are also genetically identical to the parent cell nucleus (they...
The Cell Cycle Mitosis is part of a precisely controlled process known as the cell cycle The cell cycle is the regulated sequence of events that occurs between one cell division and the next The ce...
Recognising Organelles from Electron Microscope Images Electron microscopes can produce highly detailed images of animal and plant cells This is because they have a higher resolution, or resolving ...
Magnification & Measuring Size Magnification is how many times bigger the image of a specimen observed is in comparison to the actual, real-life size of the specimen A light microscope has two ...
Using a Microscope Many biological structures are too small to be seen by the naked eye Optical microscopes are an invaluable tool for scientists as they allow for tissues, cells and organelles to ...
Organisation of Cells Cell theory states that cells are the basic functional unit of all living organisms Cells can become specialised for specific functions, e.g. Epithelial cells in the small int...
Prokaryotic Cells: Structure Animal and plant cells are types of eukaryotic cells, whereas bacteria are a type of prokaryote Prokaryotic cells are much smaller than eukaryotic cells They also diffe...
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Eukaryotic Cells: Structure Cells can be divided into two broad types; eukaryotic and prokaryotic cells Eukaryotic cells have a more complex ultrastructure than prokaryotic cells The term ultrastru...
Cell Theory Until microscopes became powerful enough to view individual cells, no-one knew for certain what living organisms were made from A scientist called Robert Hooke is thought to be the firs...
Genetic Screening: Uses Some circumstances, e.g. in a pregnancy where there is a family history of a genetic disorder, may require individuals to determine if they have a particular allele present ...
