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Describe the structure of DNA

Deoxyribonucleic acid (DNA) is the hereditary material in almost all organisms and is responsible for carrying out genetic instructions in the cell. DNA is a polymer of nucleotides and each nucleotide has 3 ...
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Answered by Joe P. • Biology tutor
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Describe how synapses work in the context of the nervous system.

Synapses are really important in the transmission of information signals through the nervous system. They connect two (or more) neurons, aiding the passage of information through the system. This passage of ...
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Answered by Jonathan J. • Biology tutor
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Explain why a balanced diet is important for health and what a balanced diet consists of.

A balanced diet is one that contains the correct balance of different food groups to avoid malnourishment. Carbohydrates are required for energy release to the body, proteins are used in the body for growth ...
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Answered by Afiqah A. • Biology tutor
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What is the structure and function of a sensory neurone?

A sensory neurone is made up of 3 main components: the dendron, the cell body and the axon. At one end of the sensory neurone is the receptor cells where the nerve impulse begins. At the other end of the neu...
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Answered by Becky M. • Biology tutor
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Briefly describe the structure and function of the membrane-bound organelles present in a mammalian cell.

Nucleus - This is the largest organelle within the cell and contains all the cell's genetic information (with the exception of the mitochondrial genome). Structurally, it has a double membrane, known as the ...
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Answered by Elizabeth F. • Biology tutor
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