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Cell Growth_Divison
Chapter 10; Prentice Hall Biology review sheet.
| Question | Answer |
|---|---|
| If a cell has 16 chromosomes, how many chromosomes will each new daughter cell have? (This is for MITOSIS- NOT MEIOSIS.) | Sixteen. |
| When a cell grows larger, what happens to its volume and surface area? | The volume and surface area gets larger, but the ratio is smaller. |
| What are two MAIN problems a cell would have it if grew too large? | DNA overload and difficulty exchanging materials. |
| The rate at which materials enter and leave the cell depends on the cells _______ and the rate at which they are used up depends on the cells ______. | Surface area and volume. |
| Cell division provides each daughter cell with a copy of what? | DNA; One complete set of genetic information (either answer is fine.) |
| What are the two main stages of cell division? | Mitosis and cytokineses. |
| Cells are visible during which stage of the cell cycle? | Cell division |
| What happens to a cell during Interphase? (Brief answer is fine.) | The cell goes through a "between divison" phase. DNA is spread out as cell prepares to divide, and DNA is copied. |
| List the FOUR stages of mitosis. | Prophase, Metaphase, Anaphase and Telophase. |
| What occurs in Prophase? | Chromatin condenses into chromosomes, centrioles separate and spindles form. Nuclear envelope breaks down. |
| What occurs in Metaphase? | Chromosomes line up across center of cell, connected to spindle fiber at centromere. |
| What occurs in Anaphase? | Sister chromatids separate into individual chromosomes, moved apart. |
| What occurs in Telophase? | Chromosomes gather at opposite end and lose shape, two new nuclear envelopes form. |
| List the THREE phases of Interphase, and briefly describe what happens in each. | G1 Phase- Cell does most of growing, synthesizes protein and organelles. S Phase- Chromosome replication; synthesis. G2 Phase- Organelles and molecules for cell division are produced. |
| What is the cell cycle? (Only list, do not describe.) | Four phases: G1, S, G2, and M Phase. |
| What is the role of a spindle fiber during mitosis? | To help separate chromosomes. |
| What is the desired outcome of cell division? | To duplicate the parent cell into two new daughter cells. |
| What is a cell plate? When does it occur? | A cell plate is the dividing nuclei, it is only in plant cells and it occurs directly after Telophase, during cytokineses. |