Dna/Rna Notes

Topics: DNA, RNA, Gene Pages: 2 (326 words) Published: May 19, 2013
DNA – RNA Notes
The sugar in DNA is called deoxyribose. The sugar in RNA is called ribose.

-RNA is a single strand of nucleotides. DNA is made of two strands of nucleotides.

-DNA is a double helix with hydrogen bonds linking the nitrogen bases. RNA is a linear strand with no hydrogen bonds.

-The bases of DNA are: Adenine, Thymine, Cytosine, and Guanine. The bases of RNA are: Adenine, Uracil, Cytosine, and Guanine.

-RNA does not have Thymine, and DNA does not have Uracil.

-In DNA, Adenine pairs with Thymine while Cytosine pairs with Guanine. In RNA, Adenine pairs with Uracil instead, while Cytosine pairs with Guanine.

-DNA is found only in the nucleus. RNA can be found in the nucleus or cytoplasm of a cell.

-DNA's main function is to control cell activities, like telling each organelle what to make and what to do. RNA's main function is to make proteins. Transcription, or RNA synthesis, is the process of creating an equivalent RNA copy of a sequence of DNA. Both RNA and DNA are nucleic acids, which use base pairs of nucleotides as a complementary language that can be converted back and forth from DNA to RNA in the presence of the correct enzymes. During transcription, a DNA sequence is read by RNA polymerase, which produces a complementary, antiparallel RNA strand. As opposed to DNA replication, transcription results in an RNA complement that includes uracil (U) in all instances where thymine (T) would have occurred in a DNA complement. Transcription is the first step leading to gene expression

DNA or deoxyribonucleic acid separates by unwinding and each chain acts as a template for a new nucleotide chain. That replication. Transcription- that is the process which genetic info is copied from DNA to RNA. and translation- that is the process of assembling polypeptides from info that is encoded in the mRNA. That's all what they are. You know you are lucky that i read dictionaries.
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