DNA, RNA, and Proteins 1. Name the 3 parts of the nucleotide. a.____________________________ b. ____________________________ c. _____________________________ 2. Name the 4 nitrogen bases used in DNA. a. ___________________________ b.___________________________ c.___________________________ d.___________________________ 3. Name the base used in RNA that is not used in DNA. ___________________ 4. List 3 differences between DNA and RNA. DNA RNA a) ___________________________ a)__________________________________ ___________________________ __________________________________ b) ___________________________ b) __________________________________ ___________________________ __________________________________ c) ___________________________ c) __________________________________ ___________________________ __________________________________ 5. Give one codon for each amino acid listed. Aspartic acid ________________ Phenylalanine _______________ Arginine ___________________ Methionine _________________ Cysteine ___________________ Tryptophan _________________ Isoleucine __________________ Threonine __________________ Lysine _____________________ Tyrosine ___________________ Leucine ____________________ Valine_____________________ 6. Which amino acid is the START signal for protein synthesis? _____________________ 7. What are the CODONS that code for stop? _____________________________________ 8. DNA is being REPLICATED! Write the complimentary DNA strand that is formed. a. ACTGGA b. CCGATG c. TGAACG d. GGAACT a.___________ b. __________ c. __________ d.__________ 9. DNA is being TRANSCRIBED! Write the complimentary RNA strand that is formed. a. AGCTAACCT b. GCCAATAGC c. GAATCCCTT a. ___________ b. ____________ c. ___________ 10. Give the amino acid sequence for the following mRNA strand. AUG UGC AAA CCU GCA UUU CAA UUG ACG UGA ___________________________________________________________ 11. Write the mRNA codon sequence for the following protein. If there are multiple codons for the amino acid, pick only one to write. Methionine - luecine - proline – theronine – alanine – glycine – Stop ____________________________________________________________________________ Given the following DNA strand, write the mRNA strand sequence and then give the amino acid sequence of the protein. TAC CAT AAA TCG CTA CGG TTT ACT mRNA ____________________________________________________ Amino Acid ____________________________________________________ DNA (# ) ___ ___ ___ __ _ ___ ___ ___ ___ ___ ___ mRNA ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ tRNA ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ Decoded: _____________________________________________________________________ Message