Friction creates heat between two objects rubbing together, and slows the moving object down.
        
             
        
        
        
The two new strands are different from each other ,both of them have only one strand from the original DNA and the other strand is complementary . eg if a strand has the following base pairs .. AACCGGT ( consider this as the strands)
                                                           TTGGCCA
now they are going to be seperated AACCGGT     TTGGCCA
                                                         TTGGCCT      AACCGGT
as u can see the two NEW strands formed are similar but NOT IDENTICAL to each other .
        
                    
             
        
        
        
<span>Within a protein, multiple amino acids are linked together by peptide bonds, thereby forming a long chain. Peptide bonds are formed by a biochemical reaction that extracts a water molecule as it joins the amino group of one amino acid to the carboxyl group of a neighboring amino acid. </span>
I know DNA and stuff is super hard to learn I had to look at my old notes.
 
        
             
        
        
        
The building blocks of lipids are one glycerol molecule and at least one fatty acid, with a maximum of three fatty acids.
Hope this helped you, and have an amazing day.