Electricity could be discovered using batteries based on zinc or lead, but without copper wiring it would remain little more than a scientific curiosity. Electric motors and generators require large amount of wiring, so they are impossible to build on large scale in this world
 
        
             
        
        
        
Answer:
a) allosteric site
Explanation:
An allosteric site is a site on an enzyme other than the active site where a molecule that is not a substrate binds. This changes the shape of the enzyme, making it harder for the substrate to bind and inhibits enzyme activity.
Hope that helps. 
 
        
             
        
        
        
Answer:
Linear DNA is unstable in bacterial cells and unless the lac+ gene is recombined into the bacterial chromosome, it will be destroyed.
Explanation:
Bacterial recombination is a kind of hereditary recombination in microorganisms described by DNA move starting with one life form called giver then onto the next creature as beneficiary. This cycle happens in three principle ways:  
1. Change, the take-up of exogenous DNA from the general condition.  
2. Transduction, the infection interceded move of DNA between microscopic organisms.  
3. Formation, the exchange of DNA starting with one bacterium then onto the next by means of cell-to-cell contact.
Recombination into the bacterial chromosome necessary because linear DNA is unstable in bacterial cells and unless the lac+ gene is recombined into the bacterial chromosome, it will be destroyed.
 
        
             
        
        
        
Atleast 3 Heads in 10 Coin Tosses
0.95 is the probability of getting 3 Heads in 10 tosses.