Answer:
Vesicles  
Explanation:
Serotonin is a neurotransmitter that transports signals or messages between neurons. 
Most neuronal cells have vesicles in their interior, which are organelles that store neurotransmitters for exportation -by exocytosis- or from recycling -by endocytosis-. These vesicles also protect the neurotransmitter from the enzymatic action. 
Vesicles form in the cellular soma, from where they are transported to nervous terminals. Once the vesicle releases the neurotransmitter to the intercellular space, their membrane remains available in the plasmatic membrane to be reused. 
 The neurotransmitter concentration in the vesicle interior is related to the storage system and the <u>transport system</u>. There are <u>specialized transporter proteins in the vesicle membrane</u> that are involved with the introduction of the molecule to the organelle. 
In the exposed example, transporter Trans B might be located in the vesicle membranes, and hence could be found in the cytosol of the cells.
 
        
             
        
        
        
Dead zones are low-oxygen<span>, or hypoxic, areas in the world's oceans and lakes
(answer is dead zones)</span>
        
                    
             
        
        
        
<em>in the process of glycolysis ,, the products are 
<u>1 net gain of 2 ATPs..
</u><u>2 2 pyruvic acid
</u><u>3 2NADH2...:)</u>
</em>
        
                    
             
        
        
        
Answer:
An infective agent that typically consists of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host. 
 
        
             
        
        
        
Answer:what biomes ya got
Explanation:
Will determine the answer