Question of the Day4-15 enzyme that breaks hydrogen bonds between nitrogenous bases = enzyme that adds nucleotides to form a new strand of DNA =

Question of the Day4-28 DNA has thymine, but RNA has _____. Guanine pairs with _____ in DNA. Monomer of a protein =

Front of handout due end of period todayREAD pages 200-202 (my.hrw.com) AND complete #s 1-2, 4-8 on the bottom of page 202 due beginning of class tomorrow 4-18AssignmentMy.hrw.comChapter 10 section 3Username = dhe5nPassword = p5e8n

DNA

RNARNA Ribonucleic acid Function = copies the DNA so it can use it in protein synthesisThere are 3 types of RNA:mRNA messenger RNArRNA ribosomal RNAtRNA transfer RNA

4 differences between DNA + RNA = RNA = only 1 strand vs. 2 strands for DNARNA has Uracil, DNA has thymineRNA contains a different sugar molecule Ribose vs. DeoxyriboseDNA is found only in the nucleus (of eukaroytic cells)

Difference Between DNA & RNA

TRANSCRIPTION

What is Transcription? The process by which enzymes make a RNA copy of the DNA strandReview - What are the 3 types of RNA?mRNA messenger RNArRNA ribosomal RNAtRNA transfer RNA

TRANSCRIPTION

What is the function mRNA?The RNA is a copy of the DNA This leaves the nucleus + moves to the cytoplasm to the site of protein synthesis.It carries the information needed for making a protein chain.Combines with rRNA + involves tRNA to complete TRANSLATION

TRANSCRIPTION

RNA Polymerase enzyme that builds the mRNA strand similar to DNA polymerase from DNA replication

Transcription

ASSIGNMENT: Skim section 10.2 at my.hrw.com AND complete #s 1-6, 8, + 9 on page 199.

http://www.youtube.com/watch?v=d1UPf7lXeO8

http://www.youtube.com/watch?v=FUA6_Ucw3i4

DNA SONGS:

Question of the Day4-18One way DNA + RNA are the same = One way DNA + RNA are different =

Announcement4-18Unit # 8 Test = Friday 4-29

QUICK TALK4-18DNA polymeraseThymineAmino acidHydrogen bondTranscription S-phaseReplicationHelicase Uracil RNA polymeraseNucleic acid Peptide bond

TRANSLATIONWhat is translation? Process by which the order of nitrogenous bases in mRNA codes for the order of amino acids in a protein.

tRNA & rRNA - TRANLSATIONWhat is the function rRNA? Helps to bond amino acids together in protein synthesisWhat is the function tRNA?tRNA brings amino acids to the ribosomal RNA so they can be assembled into proteinsHas the anticodon that matches with the codon on the mRNA

http://www-class.unl.edu/biochem/gp2/m_biology/animation/gene/gene_a2.htmlhttp://www.stolaf.edu/people/giannini/flashanimat/molgenetics/transcription.swf

Assignment4-18HandoutSkim (read over) section 10.3 and complete questions #s 1-8 at the bottom of page 202 my.hrw.com.

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