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What is the role of ATP in muscle contraction?

ATP is responsible for cocking (pulling back) the myosin head, ready for another cycle. When it binds to the myosin head, it causes the cross bridge between actin and myosin to detach. ATP then provides the ...
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Answered by Thomas D. • Biology tutor
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How is the lung adapted for gaseous exchange?

The lung consists of one cell thick bronchioles , which feed into round structures called alveoli , which are round in shape and also one cell thick. The bronchioles and alveoli are surrounded by capillaries...
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Answered by Thomas D. • Biology tutor
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A curve is defined by the parametric equations x = 3 - 4t, and y = 1 + 2/t. Find dy/dx in terms of t.

At first glance, this looks quite tricky, as usually when we are asked to find dy/dx, we have one equation, but here we have 2.So in this case, we need to use the statement that dy/dx = (dy/dt) * (dt/dx)Then...
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Answered by Wesley M. • Maths tutor
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What is the integral of (6x^2 + 2/x^2 + 5) with respect to x?

When we think of integration, we should be thinking of the same method every time; adding one to the power, and then dividing by that new power.The integral of the sum of each of these terms is equal to the ...
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Answered by Wesley M. • Maths tutor
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Evaluate the view that religious beliefs and organisations are barriers to social change. (20 marks)

This question requires students to present theories/ perspectives that argue that religion prevents social change or maintains how things currently are in society. Students should first address the view in t...
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Answered by India P. • Sociology tutor
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