Answer:
A polar molecule is a molecule that has a positive and negative charge at either end.
Answer:
Liquids have more kinetic energy than solids
Explanation:
When a substance increases in temp, heat is being added, and its particles are gaining kinetic energy.
Answer:
The correct option is <em>B) ultraviolet region, especially below a wavelength of 320 nm.</em>
Explanation:
Ultraviolet light carries an enormous amount of energy in it. It is invisible to the human eye. When UV light with enormous energy and wavelength lesser than 320nm, hits the DNA, it causes changes in the structure of the DNA. Mostly, it affects the thymine nitrogenous base regions and forms pyrimidine dimers. The structure of the DNA changes on all the sites where dimers form and hence, they cannot be properly transcribed.
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