Investigating 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 variable on an organism's he...
Cardiac Cycle The cardiac cycle is the series of events that take place in one heart beat, including muscle contraction and relaxation The contraction of the heart is called systole, while the rela...
Blood Vessels: Structure & Function The body contains several different types of blood vessel Arteries: transport blood away from the heart, usually at high pressure, to the tissues Remember; a...
Mammalian Heart: Structure & Function Circulatory systems are systems which transport fluids containing materials needed by the organism, as well as waste materials that need to be removed Circ...
The Importance of Water in Transport Water is the medium in which all metabolic reactions take place in cells and in which all substances are transported around the body Water is composed of atoms ...
The Need for a Circulatory System The cells of all living organisms need a constant supply of reactants for metabolism, e.g. oxygen and glucose Single-celled organisms can gain oxygen and glucose d...
Using a Large Data Set What is a large data set? As part of your course there is a large data set that you can use It contains lots of information You are not expected to memorise any results from ...
Normal Hypothesis Testing How is a hypothesis test carried out with the normal distribution? The population parameter being tested will be the population mean, in a normally distributed random vari...
Sample Mean Distribution What is the distribution of the sample means? For any given population it can often be difficult or impractical to find the true value of the population mean, µ The populat...
