LIFE SCIENCE

Detailed explanation-1: -All living things have DNA within their cells. In fact, nearly every cell in a multicellular organism possesses the full set of DNA required for that organism. However, DNA does more than specify the structure and function of living things-it also serves as the primary unit of heredity in organisms of all types.

Detailed explanation-2: -Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).

Detailed explanation-3: -All cells have DNA. The above is the true statement. DNA is the genetic material. So, it is present in all the living cells from bacteria to human beings.

Detailed explanation-4: -DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.

Detailed explanation-5: -Answer and Explanation: Of the following the only that is true about DNA is that it is located in the nucleus of our cells. DNA is made up of nitrogenous bases, phosphates and sugars. The first step of gene expression requires the unzipping of the double helix for the RNA polymerase to synthesize messenger RNA.