AQA A Level Biology復(fù)習(xí)筆記2.1.7 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 ...
AQA A Level Biology復(fù)習(xí)筆記2.1.6 Prokaryotic v Eukaryotic Cells
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...
AQA A Level Biology復(fù)習(xí)筆記2.1.5 Structure of Prokaryotic Cells
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...
AQA A Level Biology復(fù)習(xí)筆記2.1.4 Eukaryotic Cell Organisation
The Organisation of Cells As seen on the last page, in complex?multicellular?organisms?eukaryotic?cells become?specialised?for?specific functions. For example: Epithelial cells in the small ...
AQA A Level Biology復(fù)習(xí)筆記2.1.3 Specialisation of Eukaryotic Cells
Adaptations of Eukaryotic Cells In complex?multicellular?organisms,?eukaryotic?cells become?specialised?for?specific functions These specialised eukaryotic cells have?specific adaptations?to...
AQA A Level Biology復(fù)習(xí)筆記2.1.2 Structure of Eukaryotic Cells
The Structure of Eukaryotic Cells Cell surface membrane The structure of the cell surface membrane – although the structure looks static the phospholipids and proteins forming the bilayer ar...
AQA A Level Biology復(fù)習(xí)筆記1.6.4 Inorganic Ions
Inorganic Ions An?ion?is an atom (or sometimes a group of atoms) that has an?electrical charge An ion that has a?+ve charge?is known as a?cation An ion that has a?-ve charge?is known as an?a...
AQA A Level Biology復(fù)習(xí)筆記1.6.3 The Properties of Water
Water in Cells 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...
AQA A Level Biology復(fù)習(xí)筆記1.6.2 Hydrolysis & Synthesis of ATP
Hydrolysis of ATP Energy released during the reactions of respiration is transferred to the molecule?adenosine triphosphate?(ATP) ATP is a small and soluble molecule that provides a?short-te...
