Question

The DNA strand must be tightly organized and packaged to fit inside a cell. What type...

The DNA strand must be tightly organized and packaged to fit inside a cell. What type of biomolecule combines with DNA to accomplish this?

A. histone proteins

B. ribosomal RNA

C. polysaccharides

D. phospholipids

E. high density lipoproteins

Science   Chemistry   
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Answer #1

DNA is a large complex, composed of several building blocks, known as nucleotides. These nucleotides bind together to form strands of DNA. These strands can then pair, based on complementary sequences of the nucleotides.

The double helix of DNA is then wrapped around certain proteins known as histones. This allows the DNA to be more tightly wrapped and therefore take up less space within the cell. The DNA can condense even further by the histones coming into close proximity to each other. This even tighter winding of the DNA causes the formation of tightly wrapped, or condensed, chromosomes.

Hence option A is correct.

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