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Biology
GCSE

Explain the role of ADH in regulating the water content of the blood.

ADH (anti-diuretic hormone) helps to regulate the water content of blood by influencing how much urine is produced by the kidneys. When blood volume increases, due to increased hydration, the osmolarity d...

Answered by Oliver T. • Biology tutor
16590 Views

Describe a simple food chain and the trophic levels within it

Grass -> rabbit -> Fox -> Crow -> Bacteria + FungiGrass = producer - first trophic level, uses photosynthesis to convert carbon dioxide and water to glucose Rabbit

Answered by Ashley C. • Biology tutor
2936 Views

Describe the process of diffusion?

Diffusion is the process where water molecules move from a negative water potential to a more negative water potential through a semi permeable membrane.

Answered by Fawcett G. • Biology tutor
2993 Views

Describe how ions, water and sugar are obtained and transported through plants. In your answer you should refer to materials moving upwards and downwards in a plant. (6 marks)

Since this is a 6 marker, it is important for you to firstly express yourself coherently, and secondly write the 'key words' that examiners look for. The question is referring to the transport pro...

Answered by Zahra I. • Biology tutor
7425 Views

Mitosis is important in the life of a multi-cellular organism. Explain why and how mitosis works.

Mitosis allows for growth and development of a living organism. The genetic material inside each cell is doubled as the chromosomes are doubled. The chromosomes line up in the centre of the cell and are p...

Answered by Helen G. • Biology tutor
2239 Views

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