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How is ATP produced in the light-dependent reaction of photosynthesis?

The production of ATP occurs through the process of photophosphorylation. When light energy hits the chlorophyll molecule, it is absorbed by photosystem I and photosystem II . This raises the energy levels o...
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Answered by Anna L. • Biology tutor
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What is the escape velocity of an object leaving a planet mass M, radius R?

As the object leaves the surface of the planet, it loses kinetic energy and gains gravitational potential energy. Through conservation of energy we know the loss of kinetic energy must be equal to the gain o...
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Answered by Thomas R. • Physics tutor
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Explain why there may be tension between human rights and state sovereignty

Human rights are rights that people are entitled to by the virtue of being human. They are said to be indivisible, absolute, fundamental, and universal. These rights are either positive rights (usually ‘free...
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Give two criticisms of Bowlby's 44 thieves study

One major issue with the research conducted by John Bowlby is that there is bias and subjectivity in his findings. Bowlby's theory of maternal deprivation was constructed prior to the research being carried ...
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Answered by Emily B. • Psychology tutor
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'Abram bound the youth with belts and straps,/ And builded parapets and trenches there,/ And stretchèd forth the knife to slay his son' - Discuss the significance of sacrifice in relation to two Wilfred Owen poems.

Following Owen's experience as an Anglican and a soldier after working for a vicarage, his disillusionment with politics, war, and Christianity is therefore bound to his depiction of sacrifice, as they draw ...
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Answered by Kit M. • English tutor
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