Calculating Cardiac Output Cardiac output (CO) is the term used to describe the volume of blood that is pumped by the heart (the left and right ventricle) per unit of time An average adult has a ca...
ECGs & Diagnosing CVD Electrocardiography can be used to monitor and investigate the electrical activity of the heart Electrodes that are capable of detecting electric signals are placed on the...
Electrical Activitiy in the Heart Control of the basic heartbeat is myogenic, which means the heart will beat without any external stimulus This intrinsic rhythm means the heart beats at around 60 ...
Homeostasis: An Overview In order to function properly and efficiently organisms have different control systems that ensure their internal conditions are kept relatively constant Physiological cont...
A-Level ( Advanced Level)课程有超过70多门学科供学生选择，一般学生选择3-4门课程进行学习，热门课程包括数学、物理、生物、化学、心理学、经济学等学科。A-Level课程最大的优点是打破了文理科限制，学生可以自...
近几年来，英国A-level考试经历了过山车式的变化。直到2019年都是基于考试；2020年依赖算法，导致了重大争议，然后出现了180度大转弯；2020年转向教师评估；然后再回到2022年的考试。 英国政府试图控制成绩膨胀，...
申请理工科物理是必选， 在ALEVEL课程中，物理是除了数学外最受欢迎的科目，而且ALEVEL物理A*率高达21%。但很同学都听说ALevel物理难度高，挑战性大，Alevel物理考试有哪些内容？（内含辅导课程） Alevel物理考试...
Anaerobic Respiration Sometimes cells experience conditions with little or no oxygen There are several consequences when there is not enough oxygen available for respiration: There is no final acce...
Practical: Investigating the Rate of Respiration Respirometers are used to measure and investigate the rate of oxygen consumption during aerobic respiration in organisms The experiments usually inv...
