Top answers

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
3215 Views

How is gas exchange in a human facilitated?

The gas exchange of O2 and CO2 must occur between the air-filled alveoli of the lungs and our blood circulation running through our vessels. Near our lung alveoli lie capillaries coat the alveoli. The capill...
HS
Answered by Hosna S. • Biology tutor
5198 Views

The curve C has the equation: 16y^3 +9x^2y-54x=0, find the x coordinates of the points on C where dy/dx = 0

C: 16y 3 + 9x 2 y -54x = 0 d/dx(16y 3 ) + d/dx(9x 2 y) + d/dx(-54x) = d/dx(0).............=>48y 2 .dy/dx + 9x 2 .dy/dx + y.18x - 54 = 0 dy/dx(48y 2 +9x 2 ) = 54 - 18xy........................................
EP
Answered by Elliot P. • Maths tutor
9177 Views

A person swims from a depth of 0.50 m to a depth of 1.70 m below the surface of the sea. density of the sea water = 1030 kg/m^3 gravitational field strength = 9.8 N/kg Calculate the increase in pressure on the swimmer. Give the Unit.

ΔP = Δh ρ g Δh = 1.7 - 0.5 = 1.2 m ρ = 1030 kg/m 3 g = 9.8 N/kg ΔP = 1.2 (m) x 1030 (kg/m 3 ) x 9.8 (N/kg) = 12,112.8 N/m 2 = 12,112.8 Pa
EP
Answered by Elliot P. • Physics tutor
8453 Views

Is the demand for food likely to be Price elastic or Inelastic?

Definition: Price elasticity of Demand (PED) measures the responsiveness of Quantity Demanded to a change in the good's price.Food is considered a basic necessity, we cannot live without it and therefore it ...
FH
Answered by Frazer H. • Economics tutor
25707 Views