Presentation on theme: "RNA. ________ are coded DNA instructions that control the ___________ of proteins. Genetic ______________ can be decoded by copying part of the ___________."— Presentation transcript:
________ are coded DNA instructions that control the ___________ of proteins. Genetic ______________ can be decoded by copying part of the ___________ sequence from DNA into RNA. RNA contains __________ information for making proteins. Genes production messages nucleotide coded
The Structure of RNA RNA consists of a long chain of nucleotides. Each nucleotide is made up of a 5-carbon sugar (Ribose) a phosphate group and a nitrogenous base.
There are three main differences between RNA and DNA: The sugar in RNA is _________ instead of deoxyribose. RNA is generally _______-stranded. RNA contains _________ in place of thymine. ribose single uracil
There are three main types of RNA: _______________ ________________ transfer RNA Messenger RNA Ribosomal RNA
Messenger RNA (mRNA) carries copies of instructions for assembling ____________ acids into proteins. Ribosomes are made up of proteins and ___________ RNA (rRNA). During protein construction, ___________ RNA (tRNA) transfers each amino acid to the ribosome. amino ribosomal transfer
What is transcription? Transcription RNA molecules are produced by __________ part of a ___________ sequence of DNA into a _______________ sequence in RNA. This process is called transcription. copyingnucleotide complementary
Transcription requires the __________ RNA polymerase. enzyme During transcription, RNA polymerase binds to DNA and separates the DNA strands. RNA polymerase then uses one strand of DNA as a template from which nucleotides are assembled into a strand of RNA.
RNA polymerase binds only to _____________ of DNA known as promoters. ____________________ are signals in DNA that indicate to the enzyme where to bind to make RNA. http://www.youtube.com/watch?v=ztPkv 7wc3yU&feature=related regions promoters