Biology 1710 Exam IV SS'03

Biology 1710 Exam IV SS'03 - Biology 1710 Exam IV, Summer...

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Biology 1710 Name:_____________________________ Exam IV, Summer ‘03 Remember to read all of the possible answers for each question before choosing the BEST ANSWER. 1. A group of cells in an embryo die in a process of programmed cell death. This is phenomenon is BEST described as: a. developmental regulation. b. metastasis. c. apoptosis. d. metamorphosis. e. mosaic development. 2. The sequence of nucleotide to which an RNA polymerase binds to in, for example, the lac operon is called a/an: a. operon. b. promoter. c. CAP site. d. operator. e. AUG codon. 3. An example of a eukaryotic DNA element to which a protein can bind and activate a gene or genes located up to 1000’s of nucleotides distant is called: a. a promoter. b. an operator. c. a transcription factor. d. a methylation site. e. an enhancer. 4. A protein that binds to a bacterial operon, preventing RNA polymerase from transcribing the genes would be most likely classified as a/an: a. repressor. b. CAP protein. c. operator. d. transcription factor. e. post-transcriptional regulator. 5. A chemical is thought to be a cause of cancer. It is likely to be classified as a/an: a. carcinogen. b. promoter. c. carcinoma. d. sarcoma. e. oncogene.
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6. In the E. coli system, CAP is an example of a/an: a. repressor. b. operator. c. transcriptional activator. d. aporepressor. e. None of the above is a correct answer to the question. 7. Which of the following would NOT be good a candidate to have a helix-turn- helix motif? a. lac repressor b. trp aporepressor c. CAP d. a eukaryotic transcription factor e. None of the above answers is correct. 8. The gene that has been found to be mutated in more that 50% of all human cancers encodes: a. a G protein. b. p53. c. Rb. d. a cyclic dependent kinase. e. No such gene exists since cancers all involve a unique set of mutated genes. . 9. The protein-encoding segments of genes in humans make up about ______ of the human genome. a. 1% b. 15% c. 25% d. 50% e. 75% 10. The most common cancer cause of death in women today is: a. lung cancer. b. cervical cancer. c. breast cancer. d. Colon cancer. e. pancreatic cancer. 11. The E. coli lac operon is best described as being: a. repressible. b. constitutive. c. inducible. d. All of the above are correct, depending upon the glucose, lactose and galactose concentrations. e. None of the above is correct answers.
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12. The first recombinant DNA molecule was created by ______ (1973), earning them the Nobel prize. a. Watson and Crick b. Fred Sanger c. Walter Gilbert d. Cohen and Boyer e. Kary Mullis 13. The enzyme which makes a DNA copy of an RNA molecule is called a/an: a. DNA polymerase. b. RNA polymerase. c. reverse transcriptase. d. transposase. e.
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This note was uploaded on 04/25/2008 for the course BIOL 1710 taught by Professor Jag during the Fall '08 term at North Texas.

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Biology 1710 Exam IV SS'03 - Biology 1710 Exam IV, Summer...

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