The concentration of lipids necessary to prepare liposomes with a diameter of 250 nm is 0.30 mM.
<h3>What are liposomes?</h3>
Liposomes are vesicles which are made up of a lipid bilayer membrane.
Liposomes are important as delivery vehicles for substances such as drugs. 
Ultrasonication is a method of liposomes preparation.
Solution of liposomes is dependent on the size.
The larger the diameter, the smaller the l elution volume. Also, increasing lipid concentration will decreases elution volume.
Therefore, the concentration of lipids necessary to prepare liposomes with a diameter of 250 nm is 0.30 mM.
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Answer:
Heliotropism
Explanation:
it's a type of tropism which is when a plant moves to where the sun is at because something is blocking it from getting sunlight which is why it moves to the sun
 
        
                    
             
        
        
        
Enzymes break up the electrons of water to yield oxygen and hydrogen gas
        
             
        
        
        
False.
Pain receptors are free nerve endings- nociceptors- that are stimulated by the chemical released from damaged tissue. 
These receptors alert us for possible danger but they don't display sensory adaptation. Sensory adaptation it's when the response to stimulus decreases even though the stimulus is the same, we just become unaware of it. 
In pain sensations, that doesn't happen. 
        
             
        
        
        
Chewing bread, tearing paper, breaking rocks