Questions

DNA is a double-stranded molecule twisted into a helix. The shape of DNA is a double helix, which is like a twisted ladder. The sides of the ladder are made of alternating sugar and phosphate molecules. Deoxyribose, which is a pentose, and a phosphate group are the two molecules together form the two sides of the DNA. The rungs of the ladder are pairs of 4 types of nitrogen bases.

A piano is a musical instrument which has keys, pedals and strings in which the strings are struck by hammers.

In computer network nodes are

* the computer that terminates the data

* the computer that originates the data

* the computer that routes the data

Effect of adding liquid is to make the cylinder more bottom heavy which is a more stable position