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mitochondrio n

Types of nucleic acids DNA: In nucleus but some in the mitochondria Replicated to form copy of DNA in cell division; Transcribed to form RNA RNA: In nucleus and mitochondria and cytoplasm. rRNA – ribosomal RNA for ribosome for translation of mRNA to form protein

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mitochondrio n

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  1. Types of nucleic acids • DNA: In nucleus but some in the mitochondria • Replicated to form copy of DNA in cell division; • Transcribed to form RNA • RNA: In nucleus and mitochondria and cytoplasm. • rRNA – ribosomal RNA for ribosome for translation of mRNA to form protein • mRNA – messenger RNA translated to from protein • miRNA – microRNA chemically processed to a for than can bind to mRNA and inhibit translation or to DNA and alter transcription NUCLEIC ACIDS proteins 40s tRNA, miRNA genes RNA polymerase III rRNA gene (in nucleolus) RNA polymerase II RNA polymerase I mRNA gene 3’ ds-DNA 5’ tRNA A site tRNA P site Template, -, sense 3’ 5’ pre-tRNA, miRNA pre-rRNA pre-mRNA incoming amino acid growing peptideprotein ribosomal subunits Nucleus 60s Nuclear membrane Cytoplasm mRNA tRNA miRNA Dicer Ribosome duringtranslation X RISC RISC siRNA Rough endo. reticulum ribosome mitochondrion cell membrane cytoplasm cytosol dsDNA ribosomesubunits lysosome pre-rRNA ER bound ribosome pre-mRNA tRNA pre-tRNA pre-miRNA S-S S-S m7G Mitochondrial DNA, RNA mRNA Signal Recog Part. peroxisome SRP Receptor free ribosome ER-attached ribosome ER Translationpost-trans modification smooth endoplasmic reticulum cell membrane protein free ribosome Golgi complex

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