Appreciating the Process of Distinguishing Organelles When looking at a prepared sample (e.g. a cell or a group of cells) under a microscope, you can sometimes see things that aren’t actuall...
Cell Fractionation & Ultracentrifugation Biologists and other scientific researchers may sometimes want to study one specific organelle This may be to: Look at the appearance of the spec...
Magnification Calculations Magnification is how many times bigger the image of a specimen observed is in comparison to the actual (real-life) size of the specimen The magnification (M) of an...
Resolution & Magnification Magnification Magnification is how many times bigger the image of a specimen observed is in compared to the actual (real-life) size of the specimen A light mic...
Practical Skill: Using Iodine to Detect Starch Grains Starch is the storage polysaccharide of plants Sugars formed during photosynthesis are stored as starch inside starch grains These starc...
Practical Skill: Microscopy & Drawing Scientific Diagrams Many biological structures are too small to be seen by the naked eye Optical microscopes are an invaluable tool for scientists a...
Key Features of Viruses Viruses are non-cellular infectious particles that straddle the boundary between ‘living’ and ‘non-living’ They are relatively simple in structure; much smaller than ...
Prokaryotic v Eukaryotic Cell Structures Animal and plant cells are types of eukaryotic cells, whereas bacteria are a type of prokaryote Prokaryotes have a cellular structure distinct from e...
Prokaryotic Cells Animal and plant cells are types of eukaryotic cells, whereas bacteria are a type of prokaryote Prokaryotic cells are much smaller than eukaryotic cells (between 100 - 1000...
