OCR A Level Biology:復習筆記2.2.5 Polysaccharides
Polysaccharides: Structure Starch,?glycogen?and?cellulose?are?polysaccharides Polysaccharides are macromolecules (polymers) that are formed by?many?monosaccharides joined by?glycosidic?bonds in a?c...
OCR A Level Biology:復習筆記2.2.4 The Glycosidic Bond
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 disa...
OCR A Level Biology:復習筆記2.2.3 Monosaccharides
Monosaccharides Sugars can be classified as reducing or non-reducing; this classification is dependent on their ability to donate electrons Reducing sugars?can?donate electrons (the carbonyl group ...
OCR A Level Biology:復習筆記2.2.2 Monomers & Polymers
Monomers & Polymers There is a massive variety of life within and between organisms however the biochemical basis of life is similar for all living things The key molecules that are requ...
OCR A Level Biology:復習筆記2.2.1 Properties of Water
Properties of Water Water is of great biological importance. It is the medium in which all metabolic reactions take place in cells. Between 70% to 95% of the mass of a cell is water As 71% of the E...
OCR A Level Biology:復習筆記2.1.9 Prokaryotic & Eukaryotic Cells
Comparison of Prokaryotic & Eukaryotic Cells Animal and plant cells are types of?eukaryotic?cells, whereas bacteria are a type of?prokaryote Prokaryotic cells are much?smaller?than eukaryotic c...
OCR A Level Biology:復習筆記2.1.8 The Cytoskeleton
The Cytoskeleton Within the?cytoplasm?of cells, there is an extensive?network?of?protein fibres This is known as the?cytoskeleton The cytoskeleton is made up of?two?main types of protein fib...
OCR A Level Biology:復習筆記2.1.7 Organelles & the Production of Proteins
Organelles & the Production of Proteins In cells,?many organelles?are involved in the?production?and?secretion?of?proteins Organelles are?specialised parts of a cell?that carry out a particular...
OCR A Level Biology:復習筆記2.1.6 Eukaryotic Cells Under the Microscope
Photomicrographs of Eukaryotic Cells There are some features or structures that can help to identify whether a cell shown in an image is a plant cell or animal cell Structures found only in?animal?...
