Top answers

Describe the process of synaptic transmission with regard to action potentials

the action potential arrives at the terminal of the axon. The arrival of the action potential will cause voltage gated calcium ions to open allowing the calcium ions to rush into the axon terminal. The arriv...
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Answered by Ali H. • Biology tutor
2313 Views

Give two features of DNA AND explain how each one is important in DNA replication.

1. DNA is double stranded. This means that when the strands separate during replication, both strands can be used as templates to produce two new double stranded DNA ,each containing one of the original stra...
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Answered by Adam M. • Biology tutor
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What are features of alveoli that allow lots of oxygen to enter the blood?

Large SA, good blood supply, short diffusion distance
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Answered by Abbie F. • Biology tutor
3208 Views

Calculate the number of moles in 0.2g of NaCl

N= M/MrMr of NaCl= 23+35.5=58.5N= 0.2/58.5= 0.0034188
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Answered by Emma M. • Chemistry tutor
2444 Views

What is the solution to x^2 + 5x - 7 = 0

X can be found by using the quadratic equation. x = -b plus or minus (b 2 -4ac) 1/2 /2a. We find that x=-5/2 plus or minus (53) 1/2 /2.
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Answered by Sacha A. • Maths tutor
4314 Views