Bild 1 midterm2

Bild 1 midterm2 - Kang Ko OH Wed 11am-11:50am at CLICS 2nd...

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Kang Ko OH: Wed., 11am-11:50am at CLICS 2 nd floor [email protected] Midterm Practice Questions -- Choose ONE best answer. 1. During S phase: A. the number of DNA molecules is quadrupled B. the number of chromosomes remains the same C. karyotype picture can be taken D. the cell grows E. B and C 2. Which of the following about cell cycle is false ? A. cells are always actively dividing B. cells need to “grow” after they just have been divided C. interphase takes about 90% of time and mitotic phase takes about 10% D. every cell must have duplicated DNA before division E. none of the above 3. In mitosis: A. homologous chromosomes cross-over during prophase I B. individual chromosomes align on the imaginary plate during metaphase C. the daughter cells are haploid cells D. all mitotic spindles are connected to kinetochore during metaphase. E. none of the above 4. Which of the following about mitosis is true ? A. chromosomes condense during prophase B. centromeres are positioned at the opposite poles of the cell during metaphase C. telophase and cytokinesis occurs simultaneously in human D. A and C E. all of the above 5. In meiosis: A. there is an interphase between meiosis I and meiosis II B. homologous chromosomes pair up on an imaginary plate during metaphase II C. the number of chromosome in each haploid cell after meiosis I and II is the same D. nuclear envelope begins to form during telophase I and cytokinesis E. B and C 6. Which of the following about meiosis is false ? A. each daughter cell is haploid to assure that the fertilized egg is diploid B. after meiosis, one diploid cell should have divided into four haploid gametes C. meiosis occurs only in testes and ovaries in humans D. each daughter cell is identical in terms of DNA information E. none of the above 7. Karyotype: A. shows stained homologous chromosomes, ordered in size from smallest to largest 1
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Kang Ko OH: Wed., 11am-11:50am at CLICS 2 nd floor [email protected] B. shows that one pair of homologues contain total 4 chromatids C. shows that two autosomal chromosomes in a pair have the same length D. will show total 46 chromosomes in all humans E. B and C 8. Chromosome X and Y: A. are called sex chromosomes B. either one can be found in sperm or unfertilized egg C. are similar in size D. A and B E. all of the above 9. Which of the following is/are true about mitosis and meiosis? I. DNA synthesis for both mitosis and meiosis occurs during interphase
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This note was uploaded on 06/12/2008 for the course BILD 1 taught by Professor Boulanger during the Spring '08 term at UCSD.

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Bild 1 midterm2 - Kang Ko OH Wed 11am-11:50am at CLICS 2nd...

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