Yes it is true, that when a solute and solvent are equal on both sides of the membrane it has achieved an osmotic equilibrium. Osmosis refers to the spontaneous movement of solvent molecules through a semi-permeable membrane. Usually the movement is that the solvent moves from a higher solute concentration into a direction that it tends to equalize both solute concentrations on both sides.
Answer:
Nerve impulse
Explanation:
A nerve impulse is transmitted through the synaptic cleft by acetylcholine. When an impulse reaches the synaptic knob, it stimulates the vesicles to move towards the presynaptic membrane releasing the acetylcholine. The transmitter substance makes the membrane permeable. An action potential is then formed along the neuron.
Gravity created our galaxy by bringing together the dust, gas, and ice to create the planets.
Answer - C. Reproduction
Reasoning - This was answered before within the community. Here's a reasoning why I chose the answer. - Just like a hydra they are abundant since they can reproduce asexually without having to reproduce with a mate, which means they the ecosystem can eat they and keep the active food chains going.
