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Unformatted text preview: a. b. Practice ? EXAM ? 3- Bio 1100 Gary Bulla, Ph.D. Chapter 10, 12-15 THERE ARE 6 PAGES AND 34 QUESTIONS ON THIS EXAM Total points possible- 100pts. The number of points for each question is shown. ? 1. (2 pts) Name the structures of a chlorophyll molecule shown at right. a. ?? Porphyrin ring b. hydrocarbon tail 2. (2 pts) In plants, O2 and CO2 enter and exit through what structure ? ___ stomata_ __________ 3. (1 pt) Although kinases are known to regulate the cell cycle, _____ cyclins __ are the proteins that regulate kinase activity. 4. (2 pts) Cancer cells exhibit two properties that distinguish them from normal cells. These properties are a._______ anchorage independent growth ____________ b.________ density independent growth ___________ 5. (1 pt) The term used to describe a tumor that spreads to new locations in an organism is ___ malignant or metastatic___________________. ?? Multiple choice: Circle the most correct answer (2 pts each) ? 6. The phase in which chiasmata form is a. metaphase II b. prophase II c. metaphase II d. anaphase 2 e. prophase I 7. Meiosis II is very similar to meiosis I except that in Meiosis II a. chromosomes are not duplicated first b. cell division occurs twice instead of just once c. ? homologous chromosomes exchange DNA via chiasmata d. the final cells are diploid 8. The XIST gene inactivates one X chromosome by a. producing a protein that coats the X chromosome b. producing a protein that activates the Y chromosome c. producing ? RNA that coats the X chromosome d. producing an RNA that inactivates the other X chromosome 9. Which of the following statements is true Meiosis results in four haploid cells by a. copying it ? s chromosomes once and dividing twice b. Copying it ? s chromosomes twice and dividing once c. Copying it ? s chromosomes twice and dividing twice d. Copying it ? s chromosomes once and dividing once True/False- For each of the below statements, Circle ? T ? for true or ? F ? for false....
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- Fall '10