Bio 1510-PE4 PDF Practice Questions

1. The enzyme adding amino acids to form b. an amino acid attached to 3' proteins in ribosome is a c. an amino acid attached to the 5' a. synthase b. synthetase d. an attachment to c. transferase IR...

1. The enzyme adding amino acids to form b. an amino acid attached to 3' proteins in ribosome is a c. an amino acid attached to the 5' a. synthase b. synthetase d. an attachment to c. transferase IRNA d. enolase 8. Addition of amino acids to form the 2. To bind to RER, the ribosome requires polypeptide a. RBS a. A site b. SRP b. P site c. tRNA c. E site d. GTP d. none of the above 3. The enzyme adding amino acids to tRNA is a 9. The stop codon in translation a. synthase a. binds to tRNA b. synthetase b. does not require release factors codes for c. transferase Met d. enolase c. does not bind to tRNA d. it also 4. The RNA carrying the codon is the a. tRNA 10. A heritable change in genetic material is b. TRNA called c. mRNA a. mutation D. MiRNA b. mitosis c. transposition 5. The decoding of mRNA is performed by the d.translation a. initiation complex 11. A mutation from a purine to a b. small subunit pyrimidine is called c. large a. point mutation subunit d. EF-Tu b. transversion c. Transition. 6. N-formyl Met is part of the a. mRNA in eukaryotes d. missense b. initiator tRNA in eukaryotes c. initiator tRNA of of prokaryotes D. None of the above 12. A mutation from a purine to another purine is called A. point mutation 7. A charged tRNA means it has a. a positive or negative charge  b. transversion 19. The constant internal environment is c. transition. also known as a. entropy d. missense b. enthalpy 13. Missense is c. Gibbs free energy a. change in a base mutation d. homeostasis b. change in purine to pyrimidine 20. Regulatory proteins bind to DNA c. same as point mutation modulating the binding of d. change in amino acid inserted a. mRNA ligase 14. A mutation in which one base is deleted b. RNA polymerase is called c. RNA polymerase a. indel d. mRNA transcriptase b. transition 21. The binding motifs that regulate gene c. frameshift expression are present in the d. transversion a. DNA major groove 15. Sickle cell anemia is an example of a b. RNA polymerase point mutation that is c. DNA minor groove a. silent d. regulatory proteins b. missense 22. A metal that is part of a DNA-binding c. nonsense motif is D. antisense a. Zn 16. In sickle cell anemia Glu is changed to b. Cu a. Gly c. Fe b. Leu D. Mn c. Ile 23.Genes involved in the same metabolic d. Val pathway are called 17. When a mutation involves more than 50 a. introns base pairs (bp) is called b. operons a. structural variation c. exons b. transversion D.alleles c. frameshift mutation 24. The lac operon does not include an d. point mutation enzyme type 18. A copy number variation refers to a. Galactosidase differences in I number of copies of a b. transaminase a. DNA c. transacetylase b. gene d. permease c. chromosome d. genetic region 25. In the presence of allolactose c. histones a. lactose can be made made d. chromatids b. glucose replaces lactose replaces glucose 32. Posttranscription is not done with c. lactose cannot be made a. acetylation d. lactose b. siRNA 26. The Irp repressor has a motif that is c. RNA editing a. helix-turn-ß-sheet d. miRNA b. Zinc finger 33. One common e of miRNA and siRNA is c. helix-turn-helix that both d. Leu zippe a. cleave RNA 27. The role of promoters in eukaryotes' b. are cleaved by RISC a. form binding sites c. are cleaved by Dicer b. repress a motif d. are made in cytoplasm c. encourage GTP use 34. Proteins are degraded specifically in the d. enhance a motif a. lysosome b. proteasome c. Golgi 28. Enhancers are d. endosome a. specific proteins b. mi RNAs 35. The enzyme used to introduce ubiquitin d. enhance a motif into proteins is a c. binding sites a. transferase nuclease d. siRNAs b. ligase c. isomerase 29. The only ones that are not physically d. nuclease independent substances are the a. promoters b. coactivators 36. CRISP/Cas9 is used to c. mediators a. amplify DNA d. enhancers b. edit DNA 30. High levels of DNA methylation c. edit genes indicate an a. active allele d.edit genome c. active gene 37. To make DNA of exons only, one has to b. inactive allele use d. inactive gene a. PCR 31. Basis of epigenetics are alterations in b. RT-PCR a. nucleosomes c. RT-qPCR b. chromatin D.STR-PCR 38. PCR was created in a. 1975 B.1983 C.2004 D. 1970 39.The first recombinant DNA was made in a. 1975 B.1983 C.2004 D. 1970 40. Reverse transcriptase makes a. cDNA from rRNA b. cDNA from tRNA c. DNA from mRNA d. cDNA from mRNA