Chem Protein Synthesis Chapter 11 Answer Key

Chapter 11 Quiz Protein synthesis Key 1. The backbone of nucleic acid polymers is composed of Nitrogenous bases and phosphates b. Polypeptides c. Sugars and phosphates d. Nucleotides C 2. Which of the following statements regarding nucleic acids is FALSE? a. DNA is contained within the entire cell, RNA is ONLY found in the nucleus. b. DNA is double stranded while RNA is single stranded c. In RNA, uracil replaces thymine d. The sugar in DNA is deoxyribose; in RNA it is ribose A 3. The nucleus contains all the information needed to synthesize which of the following molecules? a. Carbohydrates b. Lipids c. Proteins d. Phospholipids C 4. All the triplet codes needed to produce a specific polypeptide chain (protein) are found on a(n) a. mRNA b. tRNA c. anticodon d. Codon e. Both a and d f. Both b and c 5. The principal molecule that carries out the instructions coded in DNA is a. RNA b. Introns 6. The process of forming mRNA is called a. Replication b. Transcription 7. Transcription is carried out by molecule. an enzyme that binds directly to a DNA a. tRNA b. Guanine c. Nucleosomes d. Thymine A c. Translation d. Protein synthesis B c. Deoxyribose d. RNA polymerase D 8. Given the following events: 1 DNA transcribes mRNA 2 tRNA pairs with mRNA 3 mRNA passes from nucleus into cytoplasm 4 peptide bonds are formed The correct sequence for the occurrence of these events in protein synthesis is: a. 1,2,3,4 b. 1,3,2,4 9. Transcription c. 1, 4, 3, 2 d. 4, 3, 1, 2 B a. Takes places in the nucleus of the cell b. Occurs when double strands of DNA separate and RNA nucleotides pair with DNA c. Produces mRNA d. Determines the sequence of codons on mRNA c. All of the above 10. The sequence of bases in a strand of mRNA transcribed from this sequence of DNA, ATGCC would be a. TAGCG b. UACGG 11. are removed and discarded from the mRNA, and the remaining parts are spliced together to form the final version of the mRNA. c. UTCGG d. ATGCC B a. Enzymes b. Electrons c. Exons d. Introns D 12. The process which produced mature mRNA with the aid of enzymes is termed a. Translation b. RNA splicing c. Mitosis d. Protein synthesis B 13. What type of genetic information could this NOT be?: UGGCUAGCUU a. DNA c. Protein b. mRNA d. tRNA 14. The function of the tRNA is to a. Code for specific amino acids b. Form peptide bonds between amino acids A c. Bring the appropriate amino acids by reading the codon d. Make a copy of DNA 15. The bond that hold amino acids together is C a. Hydrogen bond b. Peptide bond c. Non-polar bond d. Covalent bond B Matching: For questions 16-22, match the term on the right with the description on the left. (1 point each) 16. Process by which RNA is made F a. mRNA 17. Chain of amino acids held together by peptide bonds C b. tRNA 18. Principal molecule that carries out the instructions coded in DNA A c. protein 19. Group of 3 nucleotides in mRNA that specifies an amino acid D d. codon 20. Process by which DNA makes a copy of RNA F e. RNA 21. Process by which the nucleotide in mRNA are decoded into a sequence of amino acids G f. Transcription 22. Form of RNA that transfers amino acids to the ribosome during the assembly of a protein B g. Translation