BIOLOGY DNA NOTES

13.1 1.         Structure and function of desoxyribonucleic acid . a.         desoxyribonucleic acid is a knotty biological polymer known as a nucleic acid. b.         It is make up of sm to each one units called nucleotides. i.         Which is self-possessed of deoxyribose (a simple sugar) ii.          phosphate group iii.          nitrogen base         Which apprise be either adenine (A)          constant of gravitation (G)          coulomb (C)          deoxythymidine monophosphate (T) iv.         A bonds only with T and C only bonds with G because , :         A and G are Purines (double rings) maculation C and T are Pyrimidines (single ring). Purines always bond with pyrimidines.         Adenine and Thymine imbibe 2 bonding sites, while Cytosine and Guanine earn three bonding sites (for the hydrog en bond) v.          twain long bonds of nucleotides combine by condensation to form the DNA molecule. distributively single chain is composed of single nucleotides attached to distributively other. The two chains are joined by a weak Hydrogen Bond. vi.         The DNAs structure is called a divalent spiral because it is made of a structure that appears like a crack cocaine ladder. It looks like this: 2.         Similarity and difference of all organisms a.         They are identical bc they all are composed of DNA that is made up of nucleotides with the four bases. b.         They differ because the vagabond of the bases is different.

The order of bases and ! nucleotides take care the different species. The sequence of nucleotides forms the contagious information for an organism. The more connatural the order of nucleotides is between two organisms, the more similar the two organisms are related to each other. The homosexual genome project is on the job(p) to determine the sequence of nucleotides for human beings. 3.         DNA replication a.         During Meiosis and Mitosis, DNA replication occurs i.         It occurs during the deduction stage of the interphase. ii.         Replication is necessary to offer species... If you want to meet a full essay, order it on our website: OrderEssay.net

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