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What is photosynthesis?

Photosynthesis is the process plants undergo to make energy. Carbon dioxide + water > oxygen and glucose. Plants need sunlight for this process to occur. The roots of the plant take water from the soil an...
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Answered by Madeleine B. • Biology tutor
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What Mechanisms control the human body's temperature ?

Thermoregulatory homeostasis helps to maintain the core body temperature at 37 degrees Celsius.When we are too hot the body's sweat glands secrete sweat onto the skin which then evaporates, allowing us to co...
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Answered by Alexandra D. • Biology tutor
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Explain the process of how giraffes may have evolved to have long necks (6 marks)

There is natural variation in the lengths of giraffes' necks. As there will be competition for food with other giraffes and other species, those with longer necks would reach leaves on the trees which others...
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Answered by Kate S. • Biology tutor
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How does a vaccination protect an individual from illness and how is the spread of a pathogen reduced by immunising a large proportion of the population?

In a vaccination there are small quantities of a dead or inactive version of the pathogen .When you inject it into the individual's body an immune response is stimulated against the ' foreign body '. The whi...
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Answered by Ciara D. • Biology tutor
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List the main structural differences between a typical animal, plant and bacteria cell

Plant and bacterial cells have a cell wall made of different material. Plant cell walls are primarily made of cellulose whereas bacterial cell walls are made of peptidoglycan. Animal cells lack cell walls.An...
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Answered by Andreas K. • Biology tutor
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