Questions

In computing, ".bak" is a filename extension commonly used to signify a backup copy of a file.

Yes. Warts are contagious.

You can get warts from touching a wart on someone else's body or by coming in contact with surfaces that touched someone's warts, such as towels or bathmats.

Hence, the given statement that, 'Warts are contagious' is TRUE.

Lima is the Capital of Peru and its Currency is Sol.

The letter 'X' resembles the same as the tool AXE in sounding.

Hence, the alphabet X is a tool.

Proteins are long chains of Amino acids. That is in brief, Amino acids are the monomers of Proteins. Amino acids are compounds which contain both an amino group and a carboxylic group. Proteins are made up of 20 essential amino acids.

Monomer means a small molecule of an organic substance i.e, building block in general.

Acropolis

The olfactory system is the only system in which the receptors send their signal directly to the higher brain and bypass the thalamus, which normally acts as a filter for the processes of the lower brain.