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Why is the resting membrane potential of a neurone negative when there are positive ions inside the cell?

The resting membrane potential inside the neurone (-70mV) is negative relative the outside! This means that even though there are both Na + and K + ions inside the cell, there are fewer of them (-70mV fewer)...
CS
Answered by Chloe S. • Biology tutor
5279 Views

Find the general solution to the differential equation d^2x/dt^2 + 5 dx/dt + 6x = 4 e^-t

To solve a linear second order differential equation we first find the complementary function and then the particular integral. To find the complementary function we must find the roots of the auxiliary equa...
TM
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Solve for x and y: 2x +5y + 5= 0 , 2y + 31= 5x

For a question like this you should aim to eliminate either x OR y from one equation in order to deduce the value of the other. 1) 2x +5y + 5= 0 , 2) 2y + 31= 5x Rearrange equation 2) so that 2y +31= 5x --&g...
TD
Answered by Tutor114325 D. • Maths tutor
5784 Views

By which two processes does glucose enter cells in the human body?

Active transport and diffusion. Glucose is transported by active transport, against the concentration gradient, from the gut into intestinal epithelial cells. Whereas glucose is transported by facilitated di...
RS
Answered by Robert S. • Biology tutor
18381 Views

How do you draw insightful comparisons between contrasting pieces?

With questions focusing on two contrasting pieces, it is sometimes difficult to find areas of similarity. If you can, this can be a useful starting point for exploring the differences. An effective approach ...
LW
Answered by Lydia W. • Music tutor
4244 Views