PowerPoint Presentation

WELCOMEBiology 1st PaperClass XI, Chapter IINucleic Acid

Duration of class 45.00M.Dr. J A M Azizul HaqueLecturer in Biology (Botany)Saturia Syed Kalu Shah CollegeSaturia, Manikganj.azizulhe@gmail.comWeb: www.azizulhaque.webs.comMob: 01715 322 380

How DNA works?Learning outcomea) Can speak the definition of transformation and translation.At the end of this class students ---b) Can describe codon and anticodon.c) Can explain protein synthesis from ribosome provided information from mRNA by DNA.

Ribosome40S60S80S RibosomeRibosome in the cellRIBOSOME

mRNA

mRNANucleusTranscriptionAnimal cellDNA template

AAAAUUTTGGGGGCCCCCTriplet and Codon

mRNAAnticodonAmino AcidtRNAtRNA and Anticodon

Different codon & respective amino acid

Protein SynthesisTranscriptionTranslationPolypeptide chainNucleusCytoplasm

Method of Translation

mRNAVideohttp://ictinedubd.ning.com/video/protein-synthesis(Need internet connection)Group WorkTime: 10 .00 minutesWrite codon and anticodon sequence of mRNA and tRNA respectively by using DNA template above.A T A G C C A T T G A C C T T A G CEvaluationb) What is the difference between codon and anticodon?c) Explain the assembly of proteins by ribosomes?a) Where does protein synthesis take place?AssignmentWhy is protein synthesis important?

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