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What causes the resting potential in a neurone?

A neurone which is not conducting a nerve impulse has a negative charge of -70mV compared to the outside environment; there is a potential difference across the membrane. This is partly caused by movement of...
KD
Answered by Katherine D. • Biology tutor
5462 Views

The following taxons are used in the classification of organisms: Phylum; Family; Order; Class; Species; Kingdom and Genus. Please place them in the correct order from largest to smallest.

Kingdom; Phylum; Class; Order;Family;Genus; Species Here is a handy mnemonic to help you remember (if you like spongebob squarepants!): K rabby P atties C ook O n F ry G rills S pongebob Here is an example o...
SG
Answered by Sophie G. • Biology tutor
9068 Views

Make a the subject of: (a+3)=(2a+7)/r

Equation: a+3 = (2a+7)/r First, we want to rearrange the equation, so that the 'r', which is the denominator of the right hand side, multiplies with (a+3), creating r(a+3) = 2a+7. Expanding this out, the equ...
JM
Answered by Jana M. • Maths tutor
14049 Views

"The title of a poem almost always offers the audience something signi cant to their reading and understanding. In the work of at least two poets you have studied, show how titles have affected your interpretations of the poems"

The key to answering this question is dissecting what it is asking - essentially how the titles of two poems relate to the content of the poems. For example, if the title had melancholic connotations and the...
FF
Answered by Finn F. • English tutor
3375 Views

A ball is hit horizontally at a height of 1.2 m and travels a horizontal distance of 5.0 m before reaching the ground. The ball is at rest when hit. Calculate the initial horizontal velocity given to the ball when it was hit.

Vertically: u=0 ms -1 s=1.2 m a=9.8 ms -2 s=ut + 0.5at 2 Therefore t = 0.49s Horizontally: t=0.49s s=5.0m speed = distance/time = 5.0/0.49 = 10.2 ms -1
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Answered by William W. • Physics tutor
3710 Views