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Explain how CO2 can cross a cells plasma membrane

Normally we think of CO2 as a gas because it is (at least when its in the atmosphere it is). However, it is a very different story inside of cells. CO2 is produced as a result of respiration inside mitoch...

EB
Answered by Eoin B. Biology tutor
3056 Views

A function is defined parametrically as x = 4 sin(3t), y = 2 cos(3t). Find and simplify d^2 y/dx^2 in terms of t and y.

We first need to find dy/dx and we use the fact that dy/dx = dy/dt * dt/dx. So we have dy/dt = -6sin(3t) and dx/dt = 12cos(3t). Substituing these in we have dy/dx = -6*sin(3t)1/(12cos(3t...

BS
Answered by Barnaby S. Maths tutor
5970 Views

How do I effectively revise quotes?

It is much easier to remember something if we break it down into smaller parts. Therefore I tend to sort my quotations in relation to themes and characters and here you can see that there are a lot of ove...

NF
3852 Views

Why do we use the n+1 rule in proton NMR?

The n+1 rule is used to describe the relationship between peak splitting and the number of protons a particular proton is coupled to - that is, how many protons are attached to the carbons next to the car...

DR
Answered by Daisy R. Chemistry tutor
8825 Views

Explain the formation of an action potential.

The change from resting potential to action potential is caused by the stimulation of a recpetor, this causes a chain reaction which eventually leads to a positive environement inside the...

MT
Answered by Molly T. Biology tutor
2376 Views

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