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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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What are the main differences between aerobic and anaerobic respiration

Aerboic respiration requires oxygen wheras anaerboic respiration does not. Because of this, glucose does not fully break down, resulting in there being much less energy produced. The end products are also di...
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Answered by Samuel H. • Biology tutor
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Describe the process of cyclic photophosphorylation?

Inside a chloroplast, there are thylakoid disks, that have their own phospholipid bilayer membrane, which contains embedded protiens, which allow the process of cyclic ad non-cyclic photophosphorylation to h...
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Answered by Samuel H. • Biology tutor
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Explain what a synapse is and explain how information passes across a synapse

A synapse is a junciton between neurones. Information is passed across a synapse when a chemical neurotransmitter is released from one neurone across the synpase to the next neurone causing an electrical imp...
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Answered by Autumn L. • Biology tutor
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How does the blood move through the heart?

The heart is a pump, which moves blood around your body. It has 4 areas filled with blood, called chambers and a right and left side. There are two atria and two ventricles, one of each on each side. The blo...
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Answered by Grace M. • Biology tutor
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