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Why would the simple diffusion of chloride ions across a cell membrane be extremely slow?

There are differnet ways that substances can move across a cell surface; simple diffusion, facilitated diffusion, osmosis or active transport. Most substances can move across the cell membrane via simple dif...
JB
Answered by Jess B. • Biology tutor
42481 Views

Solve the equation 3x^2/3 + x^1/3 − 2 = 0

Let u = x^1/3 The equation can therefore be written as: 3u^2+u-2=0 This can be factorised to: (3u-2)(u+1)+0 Therefore: u = 2/3 or u = -1 OR x^1/3 = 2/3 or x^1/3 = -1 So: x = (2/3)^3 or x = (-1)^3 x = 8/27 or...
NH
Answered by Namita H. • Maths tutor
10466 Views

Explore how Shakespeare uses the theme of darkness in Macbeth. Use quotes to illustrate your answer.

Like many of his contemporaries, Shakespeare used darkness figuratively to represent evil. In the Jacobean era, morality plays were popular and the symbolism of 'light' as good and 'darkness' as evil was wel...
LD
40395 Views

How do you differentiate using the chain rule?

In order to differentiate using the chain rule,you first need to know the chain rule. Chain rule : dy/dt * dt/dx = dy/dx. It is basic multiplication to get rid of the common factor of 'dt' in both equations ...
NG
Answered by Niha G. • Maths tutor
4163 Views

The law on the non-fatal offences against the person has been subjected to frequent criticism but little reform has been attempted. Evaluate the current law and suggest what reforms may be desirable.

It is now 23 years since the Law Commission published its major review of the non-fatal offences against the person, 18 years since the Labour Government, elected in 1997, indicated its intention to substant...
CM
Answered by Charles M. • Law tutor
11878 Views