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How to approach and analyse historiography

Historiography refers to different historians’ written interpretations of events and periods of history. In order to analyse different historians’ arguments, it is important to determine how far the histo...

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Answered by Flo B. History tutor
7492 Views

What role do calcium ions play in contraction of the sarcomere? (4 marks)

  1. When an action potential arrives at the motor end plate it causes depolarisation to occur in the sarcolemma of the effector muscle cells.2) Depolar...
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Answered by Ben W. Biology tutor
6091 Views

MRSA and C. difficile are resistant bacterial strains which cause life-threatening infections in hospitals. Explain how MRSA/ C. difficile could arise from non-resistant bacteria. [6 marks]

Natural SelectionCompetition for survival between bacterial colonies/ Selection pressure is survivalVariation between colonies linking to phenotype of resistanceSpontaneo...

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Answered by Ijaz C. Biology tutor
2547 Views

Show using mathematical induction that 8^n - 1 is divisible by 7 for n=1,2,3,...

First step: n=1 we have 81 -1=7 which is divisible by 7. Assumption step: 8k-1 is divisible by 7. Induction step: Using the previous step we have that 8k-1=7x. So 8k<...

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Answered by Mike C. Maths tutor
5382 Views

Differentiate the expression x^6+5x^4+3 with respect to x

Using the general rule d/dx(a*x^n) = a *n * x^(n-1) and the linearity of the derivative operator, we obtain:
6x^5+20x^3+0 = 6x^5+20x^3

Answered by Maths tutor
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