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What is the definition of osmosis? How is it different from diffusion?

Osmosis is the net movement of water molecules from a high water potential to a low water potential through a semi-permeable membrane. It is different from diffusion as it is through a semi-permeable membran...
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Answered by Coral B. • Biology tutor
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Translate the following excerpt from an art textbook

Some simple thoughts on The Last Supper by Leonardo da Vinci (Alcune semplici considerazioni sull’Ultima Cena di Leonardo da Vinci) The painting shows Jesus Christ and the 12 apostles during the last supper ...
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Answered by Riccardo S. • Italian tutor
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Why must human beings breathe?

Oxygen is required by the electron transport chain to operate. Many biochemical pathways (for example Kreb’s cycle and ß-fatty oxidation) extract electrons from biomolecules and transfer them to electron car...
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Answered by Riccardo S. • Science tutor
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How can an explosion be explained by the different ways molecules are packed together in solids, liquids and gases?

a) Gases tend to occupy a much larger volume than solids and liquids, since intermolecular forces are much weaker. b) Explosives are very unstable molecules: in this context, unstable means “full of potentia...
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What did the British believe their role was in 19th century India?

The British believed they had several roles in India during the 19th century and these roles also changed with time. At the start of the 19th century, India was still under the control of the East India Comp...
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Answered by Vivien Z. • History tutor
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