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?...
OCR A Level Biology:復習筆記2.1.5 Eukaryotic Cells
Eukaryotic Cell Structure Cell surface membrane The structure of the cell surface membrane – although the structure looks static the phospholipids and proteins forming the bilayer are constantly in...
OCR A Level Biology:復習筆記2.1.4 Magnification & Resolution
Magnification Formula 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 object can ...
OCR A Level Biology:復習筆記2.1.3 Drawing Cells
Drawing Cells To record the observations seen under the microscope (or from photomicrographs taken) a labelled biological drawing is often made Biological drawings?are line pictures which show spec...
