Its most likely D as an enzyme is made from polypeptide chains that are proteins 
hope that helps
        
             
        
        
        
Answer:
Nuclear fusion
Explanation:
Nuclear fusion is a process whereby the nuclei of two smaller atoms combine to form a much larger atom, accompanied with the release of energy. This is opposed to nuclear fission where a larger atom splits into simpler and smaller atoms. 
According to this question, the process of releasing energy when two stoms combine to form a larger atom is called NUCLEAR FUSION. A very common example of nuclear fusion is the combination of hydrogen atoms in the sun to produce Helium atom, with the release of heat energy. 
 
        
             
        
        
        
Answer:
they are not affected by earth atmosphere
 
        
             
        
        
        
<u>Answer: </u>
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Lipids
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Explanation:
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Lipids are the macro-molecules used to store energy in our body. They have the ability to store energy more efficiently and are called long-term energy storage.  
They can store twice as much energy as other molecules. They contain nine Kcal of energy per gram a compared to proteins and carbohydrates which only produce four kcal per gram. They are present in our body in the form of fat and are insoluble in water.