Answer:
7
Explanation:
It is a neautral pH (pure water has a neautral pH).. Every enzyme works at an optimum pH and different enzymes work best at different pH.
The answer is: In recent years, scientists have discovered fossils from long ago that glaciers have hidden
Answer:
The stress which occurs in the ecosystem are high temperature and salt concentration in the soil. So if the ecosystem has maximum biodiversity, there will be less affect on the ecosystem because the organisms which lives in that ecosystem show resistance against these stresses.
With the increase of biodiversity of the ecosystem, also increased the resistance against the stress and if the biodiversity decreases in the ecosystem, the ecosystem is greatly affected by the stress.
The synapse between neuron X and the postsynaptic neuron is most likely a cholinergic synapse. Neurotransmitters from neuron X bind to the postsynaptic membrane receptors that are connected to sodium channels. Positive sodium ions(Na+)enter the cell but are not enough to make the membrane potential reach the threshold. This is an excitatory synapse.
The synapse between neuron Y and the postsynaptic neuron is an inhibitory synapse. The most common inhibitory neurotransmitter is GABA(Gamma amino butryric acid). When GABA binds to the postsynaptic receptor, chlorine channels are open. Chlorine(Cl-) is an anion that is negatively charged. When chlorine enters the cell it makes the potential go below the resting membrane potential.
The synapse between neuron Z and the postsynaptic neuron has pretty much the same mechanism as the synapse between neuron X and the postsynaptic neuron but more sodium ions enter the cell so an action potential can be generated.