Types of RNA.

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Presentation transcript:

Types of RNA

Learning Objectives Name the three types of RNA and describe the purpose of each

RiboNucleic Acid - RNA RNA is a chain of nucleotides containing a nitrogenous base, ribose sugar and a phosphate. RNA has uracil instead of thymine

Various RNAs RNA comes in a variety of different shapes and types. mRNA rRNA tRNA RNA comes in a variety of different shapes and types.

Function of RNA Convert the information stored in DNA to make proteins.

Protein Synthesis Requires Three Types of RNA mRNA - Messenger RNA 2. tRNA - Transfer RNA 3. rRNA - Ribosomal RNA

Messenger RNA (mRNA) mRNA molecules carry copies of instructions for making proteins from the nucleus to the ribosome.

Transfer RNA (tRNA) tRNA molecules carry amino acids to the ribosome and transfers it to a growing protein chain.

Ribosomal RNA (rRNA) rRNA is a part of a ribosome codon rRNA is a part of a ribosome Couples mRNA codons with tRNA anticodons during protein synthesis.

RNA vs DNA RNA DNA single stranded short ( 1 gene) ribose sugar uracil (U) double stranded long (many genes) deoxyribose sugar thymine (T) Sugar Phosphate Backbone Nitrogenous Base Nitrogenous Base Sugar Phosphate Backbone

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