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What are some of the major differences between viruses and bacteria?

Viruses are parasitic organisms that cannot survive outside a living host. They are considered to be non-living, however this still remains debatable amongst virologists. They infect their host and utilise i...
AE
Answered by Antonia E. • Biology tutor
4452 Views

How should I start analysing a poem?

Begin by reading the poem all the way through. How does it sound in your head? Listen for alliteration, assonance, dissonance. Where is it smooth and where is it jarring? Think about the stresses of the word...
MB
Answered by Myriam B. • English tutor
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How does an action potential travel from one neurone to another?

The action potential arriving at the presynaptic membrane causes the voltage gated calcium ion channels on the presynaptic membrane to open. This causes an influx of calcium ions into the presynaptic neurone...
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Answered by Gemma T. • Biology tutor
3031 Views

f(x)=2x+c, g(x)=cx+5, fg(x)=6x+d; c and d are constants. Work out the value of d

f(g(x))=2(cx+5)+c fg(x)=2cx+10+c 2cx=6x 2c=6 c=3 10+c=d d=13
IB
Answered by Imogen B. • Maths tutor
6252 Views

Make x the subject of 3y + 2x = 6y - x/2

Multiply whole equation by 2 6y + 4x = 12y - x Take 6y from both sides 4x = 6y - x Add x to both sides 5x = 6y divid both sides by 5 x = 6/5(y)
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Answered by Ben P. • Maths tutor
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