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Biology

This biology unit 5 exam review covers topics such as cell growth, surface area to volume ratio, cell cycle phases, mitosis, cytokinesis, and the role of DNA replication. It also includes questions on cancer, tumors, and factors that affect cell growth.

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Biology

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  1. Biology Unit 5 Exam

  2. As a Cell Becomes Larger, its • Volume increases faster than its surface area • Surface area increases faster than its volume • Volume increases, but its surface area stays the same • Surface area stays the same, but its volume increases

  3. All of the following are problems that growth causes EXCEPT • DNA overload • Excess O2 • Obtaining enough food • Expelling wastes

  4. When during the cell cycle are chromosomes visible? • Only during Interphase • Only when they are replicated • Only during M phase (mitosis) • Only during G1 phase

  5. Which pair is correct? • G1 phase, DNA replication • G2 phase, preparation for mitosis • S phase, cell division • M phase (mitosis), cell growth

  6. When during the cell cycle is a cells DNA replicated? • G1 • G2 • S • M

  7. Which event occurs during Interphase? • Cell growth • Centrioles appear • Spindle fibers appear • Centromeres divide

  8. During which phase do the chromosomes line up along the middle? • Prophase • Telophase • Metaphase • anaphase

  9. Which represents the right order of Mitosis? • Prophase, metaphase, anaphase, telophase • Interphase, prophase, metaphase, anaphase, telophase • Interphase, prophase, metaphase, teolphase • Prophase, metaphase, anaphase, telophase, cytokinesis

  10. What is the role of the spindle during Mitosis? • Helps separate chromosomes • Breaks down nuclear envelope • Duplicates DNA • Divides cell in half

  11. The two main stages of cell division • Mitosis, interphase • Synthesis, cytokinesis • M phase, S phase • Mitosis, Cytokinesis

  12. Which will stop cells from growing • Contact with other cells • Growth factors • Cut in the skin • Cyclin taken from a cell in mitosis

  13. Why would cells in a petri dish stop growing once they have covered the bottom • Cells lack cyclin • The petri dish inhibits cell growth • Contact with other cells inhibits growth • Most cells in petri dishes lack p53

  14. Cancer is a disorder in which some cells have lost their ability to control their • Size • Spindle fibers • Growth rate • Surface area

  15. As a cell grows, it • Places more demands on DNA • Uses food and O2 more quickly • Has more trouble moving materials across cell membranes • All of the above

  16. Compared with small cells, large cells have more trouble • Dividing • Producing daughter cells • Moving materials in and out • Making copies of DNA

  17. The process in which a cell divides into two daughter cells • Cell division • Metaphase • Interphase • mitosis

  18. Which of the following happens when a cell divides • Cells volume increases • Becomes more difficult for food and materials to get in • The cell has DNA overload • Each daughter cell receives its own copy of the parent cells DNA

  19. Which is a phase in the cell cycle • G1 • G2 • M • All of the above

  20. The cell cycle is • Series of events that cells go through as they grow and divide • Period of time between the birth and death of a cell • Time from prophase to cytokinesis • Time it takes for one cell to undergo cytokinesis

  21. What is the point in the middle of a chromosome called? • Centromere • Centriole • Sister chromatid • spindle

  22. What is a tumor • An accumulation of cyclin • A mass of cells • The rapidly dividing cells found at the site of a wound • A defective p53 gene

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