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Describe the structure of proteins

Proteins are polymers of amino acids, formed by long chains of amino acids joined together by peptide bonds. These bonds are formed by condensation reactions which allow two single amino acid molecules to jo...
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Answered by Jena H. • Biology tutor
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Explain how a nerve impulse passes along a non-myelinated neuron

Nerve impulses are electrical impulses that travel along the axons of nerve cells (neurons) carrying various information. Propagation of electricity is possible due to differences in electrical potential bet...
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Answered by Paula S. • Biology tutor
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What occurs during an action potential in a neuron?

At rest, the potential difference between the inside and outside of the neuron is around -70mV. The sodium potassium pump is continually pumping 3 Na+ ions out for every 2 K+ ions it pumps in, and this maint...
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Answered by Sophie C. • Biology tutor
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What is diffusion?

Diffusion is described as the movement of molecules from a high concentration to a low concentration, through a concentration gradient until evenly spread out
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Answered by Anesha A. • Biology tutor
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What are the four chambers of the heart?

The four chambers include the right and left atrium and the right and left ventricle
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Answered by Anesha A. • Biology tutor
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