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Haemoglobin is a protein consisting of four haem groups contained in four polypeptide chains. The loading of oxygen consists of oxygen binding to iron in the haem group at areas of higher oxygen concentra...
DNA has a number of important features that allow semi-conservative replication to take place. These include:1. DNA bases are held together by weak hydrogen bonds between bases that can be easily broken, ...
1.There are 3 different types of neurons, a receptor and effector that are involved in initiating a reflex response. (Draw these out and label each neurone A B C)2.The receptor detects a stimulus (this is...
They are a group of cells responsible for the production and release of hormones that are used in the regulation of glucose in the blood
In resting axons, the inside of the cell is more negative than the outside of the cell. This potential difference has a value of -60 to -70mV and is very important in the transmission of impulses. This po...
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