CIE A Level Biology復習筆記3.1.5 Colorimetry
Colorimetry to Measure Enzyme Activity A?colorimeter?is able to measure?light absorbance?(how much light is absorbed) or?light transmission?(how much light passes through) a substance Colorimetry c...
CIE A Level Biology復習筆記3.1.4 Measuring Enzyme Activity
Measuring Enzyme Activity The?progress?of?enzyme-catalysed reactions?can be investigated by: Measuring the?rate of formation of a product?using catalase Measuring the?rate of disappearance of a sub...
CIE A Level Biology復習筆記3.1.3 How Enzymes Work
How Enzymes Work The lock-and-key hypothesis Enzymes are?globular proteins This means their?shape?(as well as the shape of the?active site?of an enzyme) is determined by the complex tertiary struct...
CIE A Level Biology復習筆記3.1.2 Enzyme Action
Mode of Enzyme Action Enzymes have an?active site?where?specific substrates bind?forming an?enzyme-substrate complex The?active site?of an enzyme has a?specific shape?to fit a specific substrate Ex...
CIE A Level Biology復習筆記3.1.1 Enzymes
Enzymes as Proteins Enzymes are?biological catalysts ‘Biological’ because they function in?living systems ‘Catalysts’ because they?speed up the rate of chemical reactions?without being used up or c...
怡和獎學金是什么？申牛劍的同學不了解一下？
怡和獎學金是什么？怡和獎學金是專門資助亞洲杰出青年，前往劍橋大學和牛津大學學習。獎學金包括3-4年的學費、雜費、生活費以及每年一次往返國際旅費，可以說是四舍五入等于留學不要錢！ 01 怡和獎學金介紹 怡和...
CIE A Level Biology復習筆記2.4.2 The Role of Water in Living Organisms
Water Molecules: In Living Organisms Water has many essential roles in living organisms due to its properties: The?polarity?of water molecules The presence and number of?hydrogen bonds?between wate...
CIE A Level Biology復習筆記2.4.1 Water & the Hydrogen Bond
Water Molecules: Hydrogen Bonds 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 ...
CIE A Level Biology復習筆記2.3.6 Collagen
The Molecular Structure of Collagen Collagen?is the most common?structural?protein found in vertebrates In vertebrates it is the component of?connective tissue?which forms: Tendons Cartilage Ligame...
CIE A Level Biology復習筆記2.3.5 Haemoglobin
The Molecular Structure of Haemoglobin Structure Haemoglobin is a?globular?protein which is an oxygen-carrying pigment found in vast quantities in red blood cells It has a?quaternary?structure as t...
CIE A Level Biology復習筆記2.3.4 Globular & Fibrous Proteins
Proteins: Globular & Fibrous Globular Globular proteins?are?compact, roughly?spherical?(circular) in shape and?soluble?in water Globular proteins form a spherical shape when folding into their ...
CIE A Level Biology復習筆記2.3.3 Protein Shape
Proteins: Interactions & Shape A polypeptide chain will fold differently due to the interactions (and hence the bonds that form) between?R groups. The three-dimensional configuration that forms...
