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What are the stages of mitosis?

There are 5 stages of mitosis. Prophase, Metaphase, Anaphase, Telophase and Cytokinesis. An easy mnemonic is P ee (on the) MAT C at. Prophase - 3 things occur: 1) Chromatin condenses and tightly coils to for...
NK
Answered by Neha K. • Biology tutor
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Evaluate policies which a government in a developed country might pursue to increase the size and productivity of its working population. 15 marks

The government could increase the size of its working population through supply side policies such as spending on education and training. If more people are educated and trained, then there will be a reducti...
JA
Answered by Jerin A. • Economics tutor
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How does the electron transport chain work?

The electron transport chain is a collection of proteins ( complexes ), of which there are 4 types, whose purpose is to pump protons into the intermembrane space. These protons will be used by the ATP syntha...
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Answered by Cezar B. • Biology tutor
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Calculate the PH of 32 mmol of HCl in 75cm^3 solution. Assume HCl fully dissociates.

32 mmol = 0.032 mol 75cm 3 = 0.075dm 3 n = c x v so c = n / v c = 0.032mol/0.075 dm 3 = 0.426moldm -3 pH = -log[H+] pH = -log(0.426) = 0.37 (no units)
AP
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How is the heart beat controlled?

Cardiac muscle is myogenic i.e has the ability to contract naturally, without external stimuli, such as action potentials arriving via nerves. For the whole heart to contract in an organised manner, there ne...
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Answered by Cezar B. • Biology tutor
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