The answer is A.the site on an enzyme where the substrate binds
        
             
        
        
        
Answer:
TCTAAGCTTGGA
Explanation: adenine (A), thymine (T), cytosine (C) and guanine (G). Each base can only bond with one other, A with T and C with G. 
 
        
             
        
        
        
PP
where P is dominant for purple flowers
        
             
        
        
        
Answer:
$400
Explanation:
This is a simple multiplication question.
200kWh × $2/kWh = $400/200kWh
We are worried about the top number, because that is how much it costs the family to use 200kWh of electricity each month. 
Final answer: $400 for 200kWh.
 
        
             
        
        
        
Answer:
The catalyst decreases the activation energy needed