1 / 23

Question of the Day

4-15. enzyme that breaks hydrogen bonds between nitrogenous bases = … enzyme that adds nucleotides to form a new strand of DNA = …. Question of the Day. 4-28. DNA has thymine, but RNA has _____. Guanine pairs with _____ in DNA.

teal
Download Presentation

Question of the Day

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 4-15 • enzyme that breaks hydrogen bonds between nitrogenous bases = … • enzyme that adds nucleotides to form a new strand of DNA = … Question of the Day

  2. 4-28 • DNA has thymine, but RNA has _____. • Guanine pairs with _____ in DNA. • Monomer of a protein = Question of the Day

  3. Assignment 4-18 Front of handout – due end of period today READ pages 200-202 (my.hrw.com) AND complete #s 1-2, 4-8 on the bottom of page 202 – due beginning of class tomorrow My.hrw.com Chapter 10 section 3 Username = dhe5n Password = p5e8n

  4. DNA

  5. RNA • RNA – Ribonucleic acid – Function = copies the DNA so it can use it in protein synthesis • There are 3 types of RNA: • mRNA – messenger RNA • rRNA – ribosomal RNA • tRNA – transfer RNA

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

  7. Difference Between DNA & RNA

  8. TRANSCRIPTION • What is Transcription? • The process by which enzymes make a RNA copy of the DNA strand • Review - What are the 3 types of RNA? • mRNA – messenger RNA • rRNA – ribosomal RNA • tRNA – transfer RNA

  9. 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

  10. TRANSCRIPTION • RNA Polymerase – enzyme that builds the mRNA strand – similar to DNA polymerase from DNA replication

  11. Transcription

  12. Transcription: Making mRNA

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

  14. DNA SONGS: http://www.youtube.com/watch?v=d1UPf7lXeO8 http://www.youtube.com/watch?v=FUA6_Ucw3i4

  15. 4-18 One way DNA + RNA are the same = One way DNA + RNA are different = Question of the Day

  16. 4-18 Unit # 8 Test = Friday 4-29 Announcement

  17. 4-18 DNA polymerase Thymine Amino acid Hydrogen bond Transcription S-phase Replication Helicase Uracil RNA polymerase Nucleic acid Peptide bond QUICK TALK

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

  19. tRNA & rRNA - TRANLSATION • What is the function rRNA? • Helps to bond amino acids together in protein synthesis • What is the function tRNA? • tRNA brings amino acids to the ribosomal RNA so they can be assembled into proteins • Has the anticodon that matches with the codon on the mRNA • http://www-class.unl.edu/biochem/gp2/m_biology/animation/gene/gene_a2.html • http://www.stolaf.edu/people/giannini/flashanimat/molgenetics/transcription.swf

  20. Assignment 4-18 Handout Skim (read over) section 10.3 and complete questions #s 1-8 at the bottom of page 202 – my.hrw.com.

  21. _____________ ___________________ _____________

More Related