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Describe the role of calcium ions and ATP during muscle contraction

Calcium ions diffuse from the sarcoplasmic reticulum and bind to troponin. This binding to troponin causes tropomyosin- which at rest blocks the actin-myosin binding sites- moves to expose these binding s...

JH
Answered by Johanna H. Biology tutor
19866 Views

Explain why Silicon Dioxide has a higher melting point than Sulfur Trioxide.

Silicon Dioxide has a macromolecular/giant covalent structure which means it has covalent bonds between all atoms in its structure. Sulfur Trioxide has a simple molecular...

HT
Answered by Holly T. Chemistry tutor
17090 Views

How do I structure an unseen poetry timed essay?

Read the text. Split your ideas into three points. It doesn't matter if they are not fully developed, even writing a one word bullet point is enough at this point. Have a different marker system for each ...

RC
Answered by Roma C. ELAT tutor
752 Views

I'm unsure how to structure my essay, which way is the best?

So, the main body of your essay should be made of: A key introduction (mentioning the points you are going to answer and your overall answer to the question), 2-4 points and a conclusion (linking back to ...

OY
Answered by Olivia Y. Economics tutor
1818 Views

When answering my essay question, what could be the key evaluative points when talking about fiscal policy?

So the key points in evaluative parts of essays need to answer the "What if" question or the "This depends upon" phrase. For example if your point is "an increase in government sp...

OY
Answered by Olivia Y. Economics tutor
2085 Views

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