The Benedict's Test for Reducing Sugars Method Add?Benedict's reagent?(which is blue as it contains copper (II) sulfate ions) to a sample solution in a test tube It is important that an excess of B...
Testing for Key Biological Molecules There are a number of tests that can be carried out quickly and easily in a lab to determine if a sample contains one of the key biological molecules (carbohydr...
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 prokary...
Structural Features of Typical Prokaryotic Cells Animal and plant cells are types of?eukaryotic?cells, whereas bacteria are a type of?prokaryote Prokaryotes have a cellular structure distinct from ...
The Vital Role of ATP All organisms require a?constant supply of energy?to maintain their cells and stay alive This energy is required: In?anabolic?reactions – building larger molecules from smalle...
Electron Micrographs: Animal Cells TEM electron micrograph of an animal cell showing key features Exam Tip You should be able to describe and interpret photomicrographs, electron micrographs and dr...
Eukaryotic Cell Structures & Functions Cell surface membrane The structure of the cell surface membrane – although the structure looks static the phospholipids and proteins forming the bilayer ...
Calculating Actual Size When investigating the size of organisms and biological structures you will use a microscope of a specific magnification to produce an image Photomicrographs?are images obta...
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 microscope...
