They all belong to more than one food chain except the frog. The insect is the prey for many food chains, and the snake is widely at the top...
        
                    
             
        
        
        
Answer:
B: Polyermase Chain Reaction
Explanation:
PCR is when we take a segment of DNA and multiply it! We can see that the number of DNA segments are increasing therefore it is PCR. Hope this helps!
 
        
             
        
        
        
Answer:
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy
Explanation:
 
        
             
        
        
        
Answer:
C
Explanation:
A is wrong as 3 pathways are: classical, lectin, alternative
B is wrong - many C1-C9 act in other 2 ways EX C5
D is wrong - MAC consists of C5-C9
 
        
                    
             
        
        
        
Answer:
See Explanation
Explanation:
We define antibiotic susceptibility testing as an evaluation of the ability of  antibiotics to inhibit bacterial growth. This test is necessary because certain bacteria may have developed resistance to certain antibiotics.
Hence, if the antibiotic susceptibility testing result of Staphylococcus aureus showed absence of growth on the zones of penicillin, ampicillin, tetracycline and chloramphenicol disk, then it implies that these antibiotics are all largely effective against Staphylococcus aureus and could be used for treatment of Staphylococcus aureus infection.