CIE IGCSE Biology: 復(fù)習(xí)筆記：5.1.5 Enzymes & pH: Extended Enzymes & pH: Extended The optimum pH for most enzymes is 7 but some that are produced in acidic conditions, such as the stomach, h...
Roles of Membranes Membranes are?vital?structures found in all cells The?cell surface membrane?creates an enclosed space separating the internal cell environment from the external environment Intra...
關(guān)注社科實(shí)踐活動(dòng)的家長(zhǎng)和同學(xué)對(duì)CTB應(yīng)該并不陌生。全球青年研究創(chuàng)新論壇CTB，由哈佛商學(xué)院和清華大學(xué)經(jīng)管學(xué)院學(xué)者聯(lián)合啟動(dòng)，旨在讓中國(guó)青年心懷家國(guó)立足身邊，提出原創(chuàng)本土解決方案，在世界舞臺(tái)發(fā)聲。 CTB 2022-2...
Practical: Measuring Enzyme Activity The?progress?of?enzyme-catalysed reactions?can be investigated by: Measuring the?rate of formation of a product Measuring the?rate of disappearance of a substra...
Coenzymes, Cofactors & Prosthetic Groups There are substances?other than?substrates and inhibitors that?interact?with?enzymes Some enzymes can only?function properly?if another?non-protein subs...
Enzyme Inhibitors Reversible inhibitors An enzyme's activity can be reduced or stopped,?temporarily, by a?reversible inhibitor There are?two types?of reversible inhibitors: Competitive?inhibitors h...
Enzyme Activity: Substrate Concentration The?greater?the?substrate concentration, the?higher?the?rate of reaction: As the number of substrate molecules increases, the likelihood of enzyme-substrate...
Enzyme Activity: Enzyme Concentration Enzyme concentration affects the rate of reaction The?higher?the?enzyme concentration?in a reaction mixture, the?greater the number of active sites?available a...
Enzyme Activity: Temperature Enzymes have a specific?optimum temperature This is the temperature at which they catalyse a reaction at the?maximum rate Lower temperatures?either?prevent?react...
