Answer:
Option B, C, D and E
Explanation:
While conducting research on human being, following conditions must be fulfilled
a)	The subject must be made aware of the risk and result of the study
b)	Subject must be aware of the study objective, time duration and post study impacts
c)	Subject must be compensated for any injury caused during the study
d)	Informed consent must be taken from the subject
e)	The subject must beware of the possible uncontrollable scenarios. Also the test conducted must be testifiable on human being
f)	The ill effects of the study can be anticipated if the result obtained are worthy enough  
Considering the above facts, option B , C, D and E are unavoidable  
 
        
             
        
        
        
Answer:
C
Explanation:
DNA and RNA are the only nucleic acids on this list
 
        
             
        
        
        
Answer:
20
Explanation:
Mitosis is a process in which a cell produces an exact copy of itself. The 2 daughter cells produced from mitosis have the same number of chromatids as the parent cell.
 
        
             
        
        
        
Answer:
developmental toxicity. im not sure though, 
Explanation:
if im wrong im sorry