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What is a nucleotide?
A nucleotide is the basic unit that makes up DNA. A singular nucleotide is made up of x3 components: A base (A, T, C or G) 5 Carbon sugar (deoxyribose = DNA or ribose = RNA) Phosphate group (forms a bond bet...
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Describe the initiation and conduction of electrical signals through the heart.
For the heart to pump efficiently the control of contraction of its atrium and ventricles needs to be coordinated. Electrical signal starts at the sinoatrial (SA) node, also known as the pacemaker node. The ...
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What is the pituitary and what role does it have?
The pituitary (or the hypophysis) is a gland located at the base of the encephalon. It's composed of three lobes: the anterior lobe, the intermediate lobe and the posterior lobe. These lobes produce hormones...
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Iarina A.
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What is a Neurones resting membrane potential and how is it maintained?
On average neurones in the body have a resting membrane potential (RMP) of -70mv. What this means is when inactive/ not excited, the inside of neurone is more negative than the outside of the neurone this is...
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Idrees A.
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What is X-linked recessive inheritance?
Genetic diseases with an X-linked recessive inheritance pattern usually affect only the males in a family. These diseases are inherited via mutations on the X chromosome. Females have two X chromosomes and t...
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