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I'm having trouble understanding what transcription is, I was wondering if you could help me?

First off, I would like to ask what you can tell me that you know about transcription and if there are any specific areas which you are having problems with. Please also stop me if there are any specific bit...
GG
Answered by George G. • Biology tutor
2769 Views

What role does the heart play in the circulation of blood around the body?

The heart is essential and plays a vital role in the distribution of blood around the body. The circulation system is comprised of two organs: heart and lung. The heart has vessels bringing blood into it fro...
RG
Answered by Rohan G. • Biology tutor
4342 Views

Explain osmosis and explain why this is an important concept in maintaining water potential in animal cells.

Osmosis is a passive process by which water achieves equilibrium through a semi-permeable membrane, moving down a concentration gradient. Water will move from where it is in high concentration (ie in a low s...
AP
Answered by Alana P. • Biology tutor
6729 Views

How does a chemical synapse transmit an action potential?

The action potential reaches the pre-synaptic knob causing depolarisation. This causes voltage-gated calcium channels in the pre-synaptic membrane to open. Calcium ions enter the pre-synaptic knob through th...
KB
Answered by Kathryn B. • Biology tutor
2940 Views

What is the series of events that occur when an action potential enters the presynaptic neuron

The membrane around the presynaptic neurone depolarises This depolarisation causes Ca2+ voltage-gated channels to open and Ca2+ influxesCa2+ causes vesicles with specific neurotransmitters to migrate to the ...
JA
Answered by James A. • Biology tutor
3197 Views