synthesis

definition: 
the combination of ideas into a complex whole
sentence: 
Blacks and other minorities have higher concentrations of melanin, which makes their skin darker, but this inhibits synthesis of vitamin D, the researchers explained.
Now, biologists know that RNAs serve many other essential functions: they help with protein synthesis, control gene activity and modify other RNAs.
difficulty: 
medium
toefl frequency: 
2
toefl classification: 
adverb: 
synthetically
adjective: 
synthetic
adverb sentence: 
adjective sentence: 
verb: 
synthesize
verb sentence: 
noun: 
synthesis
noun sentence: