By Air: Fly to either Buffalo New York or Toronto Canada. Buffalo/Niagara International Airport is 25 miles/41 kilometers to Niagara Falls. Toronto Canadaâs Lester Pearson International airport is 78 miles/125 kilometers to the Falls. The airport you choose to arrive at usually depends on where you are coming from.
2. A device or agent used to detect or explore a substance, e.g., a molecule used to detect the presence of a specific fragment of DNA or RNA or of a specific bacterial colony. 3. To enter and explore, as with a probe.
The biuret test is a chemical test used for detecting the presence of peptide bonds. In a positive test, a copper(II) ion is reduced to copper(I), which forms a complex with t â¦ he nitrogens and carbons of the peptide bonds in an alkaline solution.A violet color indicates the presence of proteins.he biuret test is a chemical test used for detecting the presence of peptide bonds. In the presence of peptides, a copper(II) ion forms a violet-colored complex in an alkalin â¦ e solution.