Active transport requires energy to transfer material in and out of the cell.
Passive transport is automatic and does not require energy. 
Examples of Active: Endocytosis and Exocytosis.
Examples of Passive: Facilitated Diffusion, Simple Diffusion, and Osmosis. 
Hope I helped! <u><em>HAPPY NEW YEAR!!!!!!!
</em></u><u><em /></u><em>can u mark me brainliest pls?</em><u><em>
</em></u>
        
                    
             
        
        
        
Answer:
b. di uses across a synaptic cleft from a neuron to a muscle cell.
Explanation:
A neurotransmitter is di uses across a synaptic cleft from a neuron to a muscle cell. Neurotransmitters are chemicals which enable neurotransmission.  In reaction to an impulse a motor neuron axon secretes a neurotransmitter and causes the muscle fiber to contract. It is a chemical messenger which passes on the signals across the chemical synapse.
 
        
             
        
        
        
Answer:
Lol! Also, what is the question? Or is there no question?
Explanation:
 
        
             
        
        
        
It was developed by scientists throughout history of mankind
        
             
        
        
        
Totipotent cells can differentiate into more types of cells