Prokaryotic cells<span> are </span>cells<span> without a nucleus. The DNA in </span>prokaryotic cells<span> is in the cytoplasm rather than enclosed within a nuclear membrane. </span>Prokaryotic cells<span>are </span>found<span> in single-celled </span>organisms<span>, such as bacteria, like the one shown in Figure below. I hope that helped! :)</span>
Answer:
Cocaine
Explanation:
Cocaine is a type of stimulant drug like it increases the alertness and activities of brain producing a feeling of well being. It can amplify the effects neurotransmitters such as norepinephrine, serotonin, adrenaline and dopamine.
Dopamine act as reward which is released in normal activities like eating, sex or in response to any drug. During normal condition dopamine is released in the synapse by the neuron, binds to <em>dopamine receptors</em> and after producing its its affect it is transported by dopamine transporters from synapse. Drugs like cocaine may block the dopamine transporter causing the accumulation of dopamine in synapse which produces an amplified response.
Norepinephrine mobilizes brain and body functions and released particularly in flight or fight conditions. Norepinephrine effect is also amplified in the same way as this time cocaine binds and blocks the <em>norepinephrine transporter</em> to cause accumulation of norepinephrine in synapse which ultimately results in amplified effect of norepinephrine.
The oceanic crust is denser than the continental crust.
Also, the oceanic crust consists mostly of basalt.
What is the oceanic crust made of?
The topmost layer of the tectonic plates' oceanic part is called the oceanic crust. It is made up of two oceanic crusts: the upper crust, which contains pillow lavas, and the bottom crust, which is made up of troctolite, and ultramafic cumulates. The crust sits on top of the hard mantle's topmost layer.
Dark-colored rocks named basalt and gabbro make up the majority of the marine crust. It is lighter-colored rocks called andesite and granite that make up the continental crust, which is thinner and denser. Because of its low density, continental crust "floats" high above the viscous mantle, generating dry land. It develops as magma rises to fill the space between divergent tectonic plates and is consumed in subduction zones.
To learn more about oceanic crust, visit:
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