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How is a nervous impulse transmitted across a synapse?

An action potential (AP) reaches the pre-synaptic membrane. This causes the voltage-gated calcium channels to open, and calcium ions flow down their concentration gradient into the pre-synaptic terminal. ...

Answered by Teodora N. • Biology tutor

2340 Views

Was Trotsky’s leadership of the Red Army responsible for the survival of the Bolshevik Revolution?

It is undoubtable that Trotsky’s leadership of the Red Army played a significant role in ensuring the Bolshevik Revolution survived the civil war of 1918-1921. However, there are other factors that also c...

Answered by Abigail Z. • History tutor

3372 Views

Find the equation of the the tangent to the curve y=x^3 - 7x + 3 at the point (1,2)

y_C=x³ - 7x + 3 ------> equation of curve.y_T=mx+c ----------------> equation of tangent, where m is the gradient of the graph and c is the value of the y-intercept (t...

Answered by Matthew B. • Maths tutor

3485 Views

Write (1+2i) /(2-i) in form x+iy

(1+2i) (2+i)/(2+i)(2-i) = (2-2+4i+i)/5 = 5i/5 = i

Answered by Rahil M. • Further Mathematics tutor

2866 Views

How would you solve the inequality x^2-2x-8 >= 0?

We are looking for all the x values for which this equation holds. We know how to solve quadratic equations without the inequalities, and that is the first step here! So let's forget about the greater tha...

Answered by Kirsty G. • Maths tutor

19382 Views