Question

Which of the following involve complementary base pairing to transfer information? 19. a. Replication. b. Transcription. c. Translation, d. Both a and b. e. All of the above. 20. The type of probe used to detect proteins is a(n) aantibody b. pH c. nucleic acid d. PCR e. fluorescent probe. Diploid cells contain two copies of each chromosome. ahomologs. b. alleles. These two copies are called 21. c. mitosis. d. haploids e. genes. Restriction enzymes 22. cut the DNA backbone. b. amplify small amounts of DNA. c. rearrange the DNA sequence. d. break hydrogen bonds. e. hybridize recombinant DNA molecules. by way of Entrance into and out of the nucleus occurs 23. a. membrane transporter proteins b. nuclear pores. c. endocytosis & exocytosis. d. molecular pumps. e. Both a and b. Import into the nucleus can be regulated by a number of mechanisms. Thenuclear transcription factor NFKB is stimulated to enter the nucleus in activated lymphocytes. Which of the following events occurs when NFKB is stimulated to enter the nucleus? 24. a. A phosphatase connects a phosphate to NF<B. b. IkB is degraded c. NFKB interacts with exportin d. IkB binds to the nuclear localization signal on NFxB e. NFxB is degraded What type of enzyme covalently attaches a phosphate an amino acid of a protein? 25. to a. phosphatase b. DNA polymerase c. RNase d. kinase e. GTPase

Answer 1

19) in both replication and transcription complementary base pairing is needed so the answer is d) both a and b

20) protein can be detected using antibody against protein so the answer is a) antibody

21) 2 copies of a chromosome in a cell is called homologous chromosomes so the answer is a) homologous

22) restriction enzymes cut the DNA into fragments at specific sites so the answer is a) cut the DNA backbone

23) proteins into nucleus move in and out through nuclear pores so the answer is b) nuclear pores