When a nerve impulse reaches the end of the first neuron (presynaptic terminal), various neurotransmitters are released from the same, into the area between the two neurons, called as a synaptic cleft. From synaptic cleft, these neurotransmitters are picked up the postsynaptic terminal of the second neuron, which leads to an impulse.
<span>I think the correct answer among the choices listed above is option C. The organism described most likely is a starfish. This is because annelids and mollusks exhibit spiral holoblastic cleavage while the echinoderms have radial holoblastic cleavage.</span>
It would be A. Commensalism because only the plant is being benefitted in this relationship, whilst there is no harm nor benefits done to the fungus.
The answer would be 9. There are nine <span>essential amino acids needed to create a complete protein. </span>
All cells require enzymes<span> to survive and </span>function.Enzymes<span> are catalysts, which means that they make chemical reactions go faster, but are not changed by the reaction.</span>
