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How do Calcium and ATP contribute to muscle contraction?

When the nerve impulse arrives, it stimualtes the opening of Voltage Gated Calcium channels in the sarcoplasmic reticulum. This means Calcium is released into the sarcoplasm where is can bind to troponin and...
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Answered by Sophie C. • Biology tutor
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integrate x^2 + 3x + 4

For the x 2 term we add one to the power, and then divide by 3 to get x 3 /3 For the next term we add one to the power and divide by the new power to get 3x 2 /2 We do the same for the 4, which just goes to ...
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Answered by Harry B. • Maths tutor
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Evaluate x^2 +2x -4 = 0

Using the quadratic formula (-b +- sqrt(b^2 -4ac))/2a we can sub substitute a = 1, b=2 and c = -4 to solve. The answer is x = -1 +/- sqrt(5)
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Answered by Adeolu C. • Maths tutor
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Translate the following Facebook post: "Il y a un centre commercial dans ma ville. Le samedi j’aime faire les magasins avec ma copine. Récemment j’ai acheté un nouveau portable. C’était trop cher. Je ne sais pas si on va sortir la semaine prochaine."

Il y a un centre commercial dans ma ville - There is a shopping centre in my town Le samedi j'aime faire les magasins avec ma copine - On saturdays (recurrent) , I like to do the shops/go shopping with my fr...
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Answered by Clarisse S. • French tutor
5157 Views

A straight line L1 has equation y = 2x + 4. L2 is parallel to L1 and passes through the point (3,13). What is the equation of L2?

Firstly, If L2 is parallel to L1, the gradient of L1 = L2 . If we then take the generic equation of any straight line to be: y = mx + c, the m (gradient) of any two parallel lines will be equal! So even befo...
HP
Answered by Harvey P. • Maths tutor
16183 Views