CIE A Level Biology復習筆記2.2.4 The Glycosidic Bond
Forming the Glycosidic Bond To make monosaccharides more suitable for transport, storage and to have less influence on a cell’s?osmolarity, they are bonded together to form disaccharides and polysa...
CIE A Level Biology復習筆記2.2.3 Reducing & Non-Reducing Sugars
Reducing & Non-Reducing Sugars Sugars can be classified as reducing or non-reducing; this classification is dependent on their ability to donate electrons Reducing sugars?can?donate electrons (...
CIE A Level Biology復習筆記2.2.2 Covalent Bonds in Polymers
Covalent Bonds in Polymers A?covalent bond?is the sharing of two or more electrons between two atoms The electrons can be shared equally forming a?nonpolar?covalent bond or unequally (where an atom...
CIE A Level Biology復習筆記2.2.1 Biological Molecules: Key Terms
Biological Molecules: Key Terms The key molecules that are required to build structures that enable organisms to function are: Carbohydrates Proteins Lipids Nucleic Acids Water The key biological m...
CIE A Level Biology復習筆記2.1.3 Testing for Non-Reducing Sugars
Testing for Non-Reducing Sugars Sugars can be classified as reducing or non-reducing; this classification is dependent on their ability to donate electrons (a reducing sugar that is able to donate ...
CIE A Level Biology復習筆記2.1.2 The Benedict's Test
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...
CIE A Level Biology復習筆記2.1.1 Biological Molecule Tests
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...
CIE A Level Biology復習筆記1.2.5 Viruses
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...
CIE A Level Biology復習筆記1.2.4 Prokaryotic v Eukaryotic Cells
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 ...
