AQA A Level Biology复习笔记6.2.3 Nerve Impulses
Action Potentials Neurones transmit electrical impulses, which travel extremely quickly along the neurone cell surface membrane from one end of the neurone to the other Unlike a normal elect...
AQA A Level Biology复习笔记6.2.2 Resting Potentials
Resting Potentials Neurones transmit electrical impulses, which travel extremely quickly along the neurone cell surface membrane from one end of the neurone to the other In a resting axon (o...
AQA A Level Biology复习笔记6.1.14 Calculating Cardiac Output
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 h...
Edexcel IGCSE Biology 复习笔记 2.5.5 Practical: Investigating Carbon Dioxide & Photosynthesis
Edexcel IGCSE Biology 复习笔记 2.5.5 Practical: Investigating Carbon Dioxide & Photosynthesis Practical: Investigating Carbon Dioxide & Photosynthesis The iodine test for starch can ...
Edexcel IGCSE Biology 复习笔记 2.5.4 Practical: Investigating Light & Photosynthesis
Edexcel IGCSE Biology 复习笔记 2.5.4 Practical: Investigating Light & Photosynthesis4 Practical: Investigating Light & Photosynthesis Although plants synthesise glucose during photos...
AQA A Level Biology复习笔记6.1.13 The Autonomic Nervous System
The Autonomic Nervous System There are several circumstances that can cause an individual's heart rate to increase, such as during exercise The brain is involved in this response of the hear...
Edexcel IGCSE Biology 复习笔记 2.5.3 Practical: Investigating Photosynthesis & the Evolution of Oxygen
Edexcel IGCSE Biology 复习笔记 2.5.3 Practical: Investigating Photosynthesis & the Evolution of Oxygen Practical: Evolution of Oxygen We can demonstrate the evolution of oxygen (from the...
AQA A Level Biology复习笔记6.1.12 Investigating Variables that Affect Heart Rate
Investigating Variables that Affect Heart Rate There are a wide range of factors that influence the heart rate of an organism Experiments can be designed to investigate the effect of a named...
AQA A Level Biology复习笔记6.1.11 Myogenic Stimulation of the Heart
Heart Action: Initiation & Control Control of the basic heartbeat is myogenic, which means the heart will beat without any external stimulus This intrinsic rhythm means the heart beats a...
