The neurotransmitter glutamate opens channels that are permeable to sodium ions. what effect does glutamate produce on a postsynaptic neuron? the neurotransmitter glutamate opens channels that are permeable to sodium ions. what effect does glutamate produce on a postsynaptic neuron?
a) neither ipsps nor epsps
b) both ipsps and epsps
c) ipsps
d) epsps

D) EPSPs

Explanation:

Glutamate is a very important and powerful excitatory neurotransmitter. It is largely secreted by nerve cells present in the brain. Glutamate is known to bind ionotropic receptors. By ionotropic we mean to say that on ligand binding, such receptors tend to open and allow passage of ions. As soon as glumatate binds its receptor present on the plasma membrane, it causes excitatory electrical responses to occur by opening Na⁺ channels which causes influx of Na⁺.  More Na⁺ inside the neurons leads to the change in the membrane potential which is known as EPSPs (excitatory postsynaptic potential) and this state is known as depolarized state.

In short, glutamate causes sodium ion channels to open up in the neurons and this flow of Na⁺ is known as excitatory postsynaptic current (EPSC) and as explained in the paragraph above, this EPSC finally leads to EPSPs (excitatory postsynaptic potential).

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d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !