2022年5門AP成績(jī)提前曝光！7月5日正式放分，5分率最低的科目是哪個(gè)？
大家都知道今年AP成績(jī)的正式放榜時(shí)間是7月5日，但是這兩天AP考試中心的副總裁特雷弗·帕克（Trevor Packer），突然連夜在社交平臺(tái)上陸續(xù)發(fā)布了2022年的AP成績(jī)的5分率數(shù)據(jù)！ 這份數(shù)據(jù)包括了五門科目的成績(jī)，分別為...
AQA A Level Biology復(fù)習(xí)筆記1.4.14 Practical Skill: Controlling Variables & Calculating Uncertainty
Practical Skill: Control of Variables & Uncertainty Enzyme rate experiments?are experiments that are carried out to determine the?effect?of?changing?a particular?factor?on the?rate of a ...
AQA A Level Biology復(fù)習(xí)筆記1.4.13 Models & Functions of Enzyme Action
Students should be able to: Appreciate the Models & Functions of Enzyme Action Models of enzyme action Scientists often use?models?to explain their observations from experiments As techn...
Edexcel IGCSE Maths 復(fù)習(xí)筆記 2.3.2 Expanding Two Brackets - Harder
Edexcel IGCSE Maths 復(fù)習(xí)筆記 2.3.2 Expanding Two Brackets - Harder Hidden FOIL (aka spot the hidden brackets) Always write (a + b)2?as (a + b)(a + b) Beware of minus signs Remember the basic rules:...
AQA A Level Biology復(fù)習(xí)筆記1.4.12 Limiting Factors Affecting Enzymes: Inhibitors
Enzyme Inhibitors An enzyme's activity can be reduced or stopped, temporarily, by a reversible inhibitor There are?two types?of reversible inhibitors: Competitive?inhibitors have a?similar s...
AQA A Level Biology復(fù)習(xí)筆記1.4.11 Limiting Factors Affecting Enzymes: Substrate Concentration
Rate: 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 com...
AQA A Level Biology復(fù)習(xí)筆記1.4.10 Limiting Factors Affecting Enzymes: Enzyme Concentration
Rate: 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 and the?grea...
AQA A Level Biology復(fù)習(xí)筆記1.4.9 Maths Skill: Calculating pH
Maths Skill: Calculating pH If the?hydrogen ion?(H+) concentration of a solution is known, the?pH?can be calculated using the equation: pH?=?-log?? [H?] You can find the?‘log’?function on yo...
Edexcel IGCSE Maths 復(fù)習(xí)筆記 2.3.1 Expanding Two Brackets - Basics
Edexcel IGCSE Maths 復(fù)習(xí)筆記 2.3.1 Expanding Two Brackets - Basics What is expanding two brackets? When we expand brackets in algebra we ‘get rid of’ the brackets by multiplying out When we expand ...
