Answer: Excess ethanol metabolism leads to an accumulation of NADH that inhibits fatty acid metabolism. 
Explanation:
Fatty acid metabolism is often activated by limited or absence of NADH, however ethanol (the main constituent of most alcoholic drinks) on metabolism yields several molecules of NADH which rather stimulates belly/abdominal fat production often referred to as "beer gut".
 
        
             
        
        
        
Answer:
<h2>They provide a 3’ end for the DNA polymerase.</h2>
Explanation:
Polymerase chain reaction (PCR) is an in-vitro method to making copies of a specific DNA sample in a very short time.  
Polymerase chain reaction was invented by Kary Mullis in 1983.
 Primers are specific to the DNA which we want to replicate and they bind to the specific sequence which is complementary to it. Primers provide a 3’ end for the DNA polymerase.
 
        
             
        
        
        
<span>Proteins are different based on number and type of ____________ contained in their polypeptide chain(s)
</span>Amino acids
        
                    
             
        
        
        
your answer is C. cleavage, fracture
cleavage the way minerals breaks apart, split easily along a flat surface, 
fracture the way minerals break apart, breaks in an irregular way