The answer is A because with rna G and C always go together and A and U always go together
        
             
        
        
        
They are both important because mechanical has to do with physical - cause mechanical means physical, so chewing your mouth is physical (you break your food into smaller pieces physically). And then chemical digestion is when food and saliva mix together. They happen when breaking down food into nutrients - enzymes. Enzymes are important for that process, because they make a nutrient.
Hope this helps!!
        
             
        
        
        
Answer:
This electron handoff from NADH to FMN, as opposed to direct reduction of CoQ by NADH, a critical component of the electron transport chain is important for Signaling Transduction and Metabolomics
Explanation:
The NADH-CoQ reductase reaction is catalyzed by Complex I. In this course of activity, following events takes place-  
a)	FNM (NADH dehydrogenase flavoprotein) is reduced by the NADH  to FMNH2 through following reactions –  
NADH+H++E-FMN↔NAD++E-FMNH2
b)	In the next phase coenzyme Q  receives electron from FMNH2  through the the iron–sulfur centers of the NADH-CoQ reductase
c)	The iron atom undergoes oxidation–reduction cycles to conserve  mitochondrial protein  as lataxin and hence transport protons from the matrix to the intermembranal space thereby Signaling Transduction and Metabolomics
 
        
             
        
        
        
This could lead to odd genetic mutations if the two clones mated.