Answer:
Valence
Explanation:
In an atom, the electrons at the outermost energy level is called as valence electrons. It is the valence electrons which participates and interacts with the other atoms and form bonds. The valence electrons of an atoms are important as they depict the chemical properties of an element. 
Thus the valence electrons resides the outermost shell and surrounds the atomic nucleus. 
 
        
             
        
        
        
I think it’s phenotype bc phenotypes is what the natural selection acts on bc it’s what interacts with an organisms environment and not the genotype.
        
             
        
        
        
Yes that's right, its True, are structures that have specific functions
        
                    
             
        
        
        
Answer: All membrane lipids are amphipathic
Explanation:
The membrane lipid molecules are amphathic in nature which states that they are both hydrophobic and hydrophillic part. The lipid bi layer has been found tot be the most widely found in cell structure.
The structure is made of phosphorus and lipids and hence called as phospholipids.
The amphipathic nature of the lipids allows it to assemble spontaneously into bi layers even under the artificial conditions.
hence, all the lipids in the cell membrane or membranes are amphipathic in nature. 
 
        
             
        
        
        
The genotype<span> of an organism is defined as the sum of all its genes. The </span>phenotype<span>of an organism is the observable physical or biochemical characteristics of an organism, determined by both genetic make-up and environmental influences
</span><span>Mark as brainlist if correct please and have a blessed day!
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