What is the difference between DNA and RNA???

Question

i have to make a model of both for biology class and tell the difference between them

Answer 1

DNA is what makes up your bodys structure and functions, RNA helps with protein synthesis

Answer 2

Deoxyribonucleic acid (DNA) is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms and some viruses. The main role of DNA molecules is the long-term storage of information. Ribonucleic acid (RNA) is a type of molecule that consists of a long chain of nucleotide units. Each nucleotide consists of a nitrogenous base, a ribose sugar, and a phosphate. RNA is very similar to DNA, but differs in a few important structural details: in the cell, RNA is usually single-stranded, while DNA is usually double-stranded; RNA nucleotides contain ribose while DNA contains deoxyribose (a type of ribose that lacks one oxygen atom); and RNA has the base uracil rather than thymine that is present in DNA.

Answer 3

there are several differences, but for a model you would probably only need to know that DNA is in the shape of a double stranded helix and RNA is a single strand. other than that i dont think you need to know much, unless u get very detailed in your model and would put the U nucleic acid and label deoxyribose and ribose

Answer 4

sugar phosphate backbone of DNA consist of deoxyribose sugar while RNA is ribose sugar --> there is a -OH group in C2 of ribose which is a -H is deoxyribose --> the -OH group is susceptible to hydrolysis.
Therfore, RNA is more susceptible to hydrolysis than DNA

RNA base: uracil (extra -CH3) compared with thymine of DNA

uracil is less strict in complementary base pairing compared to thymine

DNA usually occurs as an antiparallel double helix wheares most RNA occurs in single stranded form

DNA is usually used to store genetic material whereas RNA is rarely used as genetic material except for some retroviruses

RNA serve other functions that DNA do not --> rRNA is ribosomes, tRNA and mRNA for polypeptide synthesis, snRNA for splicing of nascent primary transcript etc...

Answer 5

DNA = Double stranded with deoxyribose sugar linked to phosphate to form the framework of the molecule. (The sugar and phosphate alternate...S-P-S-P-S-P etc.) One of the nitrogenous base is attached to each of the sugar parts. The 4 nitrogenous bases on DNA are Adenine, Thymine, Cytosine and Guanine. Adenine and Thymine bond across from one strand to the other with 2 hydrogen bonds and Cytosine and Guanine bond across from one strand to the other by 3 hydrogen bonds. The strands are twisted like a flexible ladder with a right handed twist.

RNA is single stranded. The components of RNA are the ribose sugar bonded to phosphate to make the framework with one of the 4 nitrogenous bases hooked to each sugar part. The four bases of RNA are Adenine, Uracil, Guanine and Cytosine. RNA is formed from the DNA pattern.

Answer 6

The sugar.
http://en.wikipedia.org/wiki/Deoxyribose
" It is derived from the pentose sugar ribose by the replacement of the hydroxyl group at the 2 position with hydrogen, leading to the net loss of an oxygen atom, and has chemical formula C5H10O4; it was discovered in 1929 by Phoebus Levene."

Often Wikipedia isn't worth the paper it is printed on (oh? No paper? She must mean it isn't worth anything!) but the deoxyribose article is fine.

The first two posters are correct as well, by the way, but if your model is down to the atoms, don't forget deoxy- and ribose are different!

Answer 7

RNA is single stranded and DNA is double stranded...RNA has a complete sugar attached ribonucleic acid and DNA is missing a OH group on the sugar hence Deoxyribonucleic acid. Ribose being the sugar.

Answer 8

dna double stranded rna single stranted
dna deoxyibose sugar rna ribose sugar
dna thymine T rna uracil U

Answer 9

DNA is a double stranded meanind double helix. the 2 stands are very specific. A-T and C-G and RNA is a messenger Ribonucleic acid it is a single molecule, it can transfer RNA,it is a ribosomal Rna.and RNA is A-U and C-G

Answer 10

DNA is double stranded, and is a cells permanent copy of it's entire genetic information.
RNA is single stranded and similiar in composition to DNA, but is a temporary copy used to mediate protein synthesis from the information in the DNA master copy.

RNA has uracil instead of thymidine. uracil is different from thymidine in that it lacks a methyl group (CH3-) that thymidine has and it does not.

RNA has the 5 carbon sugar Ribose built into its structure
DNA has the same 5 carbon ribose with an -OH group missing from each ribose in it's structure, hence deoxyribose.

Images for models of DNA:
http://images.google.com/images?q=dna+models+and+images&hl=en&client=firefox-a&channel=s&rls=org.mozilla:en-US:official&hs=P8J&sa=X&oi=images&ct=title