DNA.

Extracting desoxyribonucleic acid from the Bacterium Escherichia coliIntroduction Deoxyribonucleic acid is contained in all

cells. The structure of desoxyribonucleic acid founds gene transmission possible. Since genes are segments of DNA, DNA

must be able to make exact copies of itself to enable thenext generation of cells to receive the same genes.

The DNA jot looks like a twisted ladder. Each grimace is a chain of alternating phosphate and

deoxyribose sugar molecules. The move are melodic phraseed bybonded orthodontic bracess of purine-pyrimidine bases. DNA

contains four such bases the purines adenine (A) and guanine(G) and the pyrimidines light speed (C) and

thymine (T). The ribonucleic acid molecule, markedly similar to DNA, usually dwells of a virtuoso chain. The RNA chaincontains ribose sugars instead of deoxyribose. In RNA, the pyrimidine uracil (U) replaces the thymine

ofDNA. DNA and RNA are made up of basic units called nucleotides. In DNA, separately of these is composed of aphosphate, a deoxyribose sugar, and either A, T, G, or C. RNA nucleotides consist of a phosphate, aribose

sugar, and either A, U, G, or C. Nucleotide irons in DNA wind around one another to form a complete twist,

or gyre, every tennucleotides along the molecule. The two chains are held fast by hydrogen bonds linking A to

T and C to GA always pairs with T (or with U in RNA); C always pairs with G. Sequences of the paired bases

are thefoundation of the genetic code.



Thus, a portion of a double- bounded DNA molecule might read:

A-T C-G G-CT-A G-C C-G A-T. When unzipped, the left strand would read: ACGTGCA; the right strand: TGCACGT. DNA is the master molecule of the cell. It directs the synthesis of RNA. When RNA is beingtranscribed, or copied, from an unzipped segýent of DNA, RNA nucleotides temporarily pair their

baseswith those of the DNA strand. In...

I thought that these notes on DNA were very simple. only simple is better when it comes to science, when sometimes it can be freakishly complex.

If you want to get a full essay, order it on our website: Ordercustompaper.com



If you want to get a full essay, wisit our page: write my paper