* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Worksheet 13.2
Vectors in gene therapy wikipedia , lookup
Two-hybrid screening wikipedia , lookup
RNA polymerase II holoenzyme wikipedia , lookup
Signal transduction wikipedia , lookup
Transcriptional regulation wikipedia , lookup
Peptide synthesis wikipedia , lookup
Gene regulatory network wikipedia , lookup
Metalloprotein wikipedia , lookup
Artificial gene synthesis wikipedia , lookup
Silencer (genetics) wikipedia , lookup
RNA interference wikipedia , lookup
RNA silencing wikipedia , lookup
Point mutation wikipedia , lookup
Deoxyribozyme wikipedia , lookup
Proteolysis wikipedia , lookup
Polyadenylation wikipedia , lookup
Nucleic acid analogue wikipedia , lookup
Gene expression wikipedia , lookup
Amino acid synthesis wikipedia , lookup
Transfer RNA wikipedia , lookup
Biochemistry wikipedia , lookup
Biosynthesis wikipedia , lookup
Messenger RNA wikipedia , lookup
Biology Honors I! ! Name ___________________ Period ___ Worksheet 13.2: Ribosomes & Protein Synthesis (pages 366-371; iBooks pages 621-629) 1. Proteins are made by joining _____________________ into long called polypeptides. 2. How can only four bases in RNA carry instructions for 20 different amino acids? ! ________________________________________________________________ ! ________________________________________________________________ ! ________________________________________________________________ 3. What is a codon? _____________________________________________________ ! ________________________________________________________________ 4. Which letter represents the number of possible three-base codes? _____________ ! A. 4! ! B. 12! ! C. 64! ! D. 128 5. ________ True or False. All amino acids are specified by only one codon. 6. What is the start codon? __________ What does it code for? ________________ 7. What is a polypeptide? ________________________________________________ ! ________________________________________________________________ 8. Can a codon contain two of the same bases? _____________________________ 9. Circle each codon in the diagram of RNA below. A U G U C G A A C 10. List the 3 stop codons: ! _______________! ! ______________! ! _________________ 1 Biology Honors I! ! Name ___________________ Period ___ 11. Use the codon wheel to complete the table. mRNA Code Amino Acid AAA GCG GAU CAA 12. What two mRNA codes corresponds with histidine? ________ ________ 13. How many different mRNA codes correspond to arginine? ______________ 14. How many different mRNA codes correspond with methionine? ____________ 15. What occurs during the process of translation?. ! _______________________________________________________________ ! _______________________________________________________________ 16. Where in the cell does translation take place? ____________________________ 17. What is an anticodon? _______________________________________________ 2 Biology Honors I! ! Name ___________________ Period ___ 18. Number the four tRNA anticodons in the order in which they should appear to match the codons in the mRNA strand. mRNA phenylalanine __________ leucine __________ lysine __________ methionine __________ 19. Which anticodon matches the mRNA codon UUC? ______________ 20. Which amino acid is carried by the anticodon UUU? (Hint: figure out the codon) ! ____________ 3 Biology Honors I! ! Name ___________________ Period ___ Match the roles with the molecules. Molecules may be used more than once. ! Roles!! ! ! ! ! ! ! Molecules 21. _________ Master Plan A. DNA 22. _________ Goes to the ribosomes in the cytoplasm! B. RNA 23. _________ Blueprint 24. _________ Remains in the nucleus 25. Go to page 368 in your textbook (iBooks page 624) and list the steps of translation. A. ____________________________ B. ____________________________ C. ____________________________ D. ____________________________ 26. Many proteins are ___________________, which catalyze and regulate chemical reactions. 27. ___________ True or False: Genes are the keys to almost everything that living cells do. 4