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A Level

What is neurotransmission and how does a chemical synapses work?

Neurotransmission is the process that uses electrical or chemical signals to communicate between neurones, leading to the co-ordination of secretion, muscle contraction and organ and brain function in the...

Answered by Biology tutor
2846 Views

How does increasing interest rates affect inflation?

What are interest rates? Interest rates are the rate of return offered on any kind of loan or investment. In reference to monetary policy and manipulation, the interest rate refers to the rate set by the ...

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Answered by Oscar B. Economics tutor
1694 Views

There are two stable isotopes of Bromine, Br-79, Br-81. If a sample of Br2 is fed into a mass spectrometer, how many peaks would be observed in the spectrum?

There should be five peaks. In the process of bombarding the Br2 molecule with electrons to charge it, the molecule can fragment into 2 Br atoms. We should therefore expect to see peaks at 79 and 81 m/z. ...

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Answered by Tim H. Chemistry tutor
12717 Views

What are the 4 phases of mitosis?

Prophase, metaphase, anaphase, and telophase.

Answered by Biology tutor
6692 Views

¿Dónde fuiste en tus últimas vacaciones?

This is a typical A-level Spanish question which requires the candidate to use the past tense.

Answered by Spanish tutor
2392 Views

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