test 3 key

test 3 key - 1 Biology 101 Test 3 DeSaix March 29, 2007...

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Biology 101 – Test 3 – DeSaix March 29, 2007 Name________________________ FOR THIS TEST # 31 WAS NOT GRADED BUT # 51 WAS Print your name, last name first, legibly on your answer sheet. Fill in Bubbles for your name and PID. Each answer is worth 2 points. Always choose one best answer and use only number 2 pencils to fill in your answers. Be sure to sign the pledge on your answer sheet. The last question will be used only if another question has to be deleted. Turn in your scantron. Keep your test paper with answers. _2__ 1. The enzyme which transcribes genes is: 1) peptide synthetase 2) RNA polymerase 3) amino acid ligase 4) a splicing enzyme 5) synthase _3__ 2. Which of the following is a type of enzyme that will clip double-stranded DNA at a specific site within a specific base sequence, often in such a way as to create “sticky ends”? 1) DNA ligase 2) reverse transcriptase 3) a restriction enzyme 4) terminator enzyme 5) transposase _3__ 3. Suppose a pharmaceutical company planned to clone the gene for human phosphoribosyl transferase , an important enzyme. Which one of the following steps would NOT be involved in this process? 1) joining of sticky ends 2) breaking human DNA by a restriction enzyme 3) breaking human DNA into individual nucleotides 4) transforming bacteria cells with modified plasmids 5) joining human DNA to plasmids _1__ 4. The process of making multiple copies of a gene by inserting it into a host genome and culturing the host is called: 1) Gene cloning 2) Industrial genetic engineering 3) Gene amplification 4) Gene magnification 5) PCR _1__ 5. A bacteriophage consists of: 1) a core of DNA surrounded by a protein shell 2) a prokaryote infected by a virus 3) a colony of bacteria 4) a toxin that destroys bacteria 5) histones around DNA _4__ 6. Any stable inherited change in the genetic material is known as a: 1) phenotype 2) linkage group 3) non-disjunction 4) mutation 5) deletion. _1__ 7. A plasmid is a (an): 1) small ring of double-stranded DNA that may carry accessory genes 2) opening in the bacterial cell wall through which the transfer of genetic material is possible 3) “sticky end” of the host’s DNA 4) unit of source (foreign) DNA containing desired genes 5) bacteriophage _2__ 8. Why do geneticists often couple a gene for antibiotic resistance to a particular gene they want to clone by inserting it into bacteria? 1) to kill the bacteria containing the particular gene 2) so they can use an antibiotic to kill the bacteria that don’t contain the human gene 3) to protect the plasmid from antibiotics 4) so the particular gene won’t be hurt by antibiotics 5) all of the above _2__ 9. Gene therapy has been proposed to: 1) treat the gonadal cells so that all the gametes will have a corrected gene 2) place cells with corrected genes in the bone marrow to restore blood cell functions 3) restore sight in individuals whose nerve cells have degenerated 4) help people with PKU gain proper functions 5) prevent Down’s syndrome
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This note was uploaded on 11/05/2011 for the course BIOL 101 taught by Professor Hogan during the Fall '08 term at UNC.

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test 3 key - 1 Biology 101 Test 3 DeSaix March 29, 2007...

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