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33 Cards in this Set
- Front
- Back
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Chromatin
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*Long strands of DNA wrapped around Protein
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Cell Cycle
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*th esequence of growth and devision of a cell
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What is the proper sequence of the cell cycle?
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Inerphase,Mitosis, Cytokinesis
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List and describe what happens during the three stages of Interphase.
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*cell grows and protein production is high. cell copies its chromosomes. organelles are manufactured and cell parts need for cell division are assembled
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List the four phases of mitosis and what always follows mitosis.
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**PMAT. Prophase metaphase anaphase telophase then Cytokinesis
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Explain how cancer arises.
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*when cells have uncontrolled cell division
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What is cytokinesis?
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*the plasma membrane pinches along the equator. then two new cells form
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How does cytokinesis differ in plant cells and animal cells?
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*plant cells have a more rigid wall making it harded and animal cells are smoother
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Why must a cell make a copy of the genetic material before it divides?
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*ability to replicate, to make copies of itself
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What is a centromere?
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*plays a role in chromosomes movement during mitosis
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What would happen to a cell when it is put in a hypotonic solution? (I want to know what would happen to the cells shape)
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*the cell would swell up so the cell looks more plump and circlish
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What would happen to a cell when placed in a hypertonic solution?
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*the cell shrinks causing the cell to look flatter
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What is the difference between active transport and passive transport?
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*active transport is ovement of materials THROUGH a membrane AGAINST a consintration gradient. passive transport moves ACROSS
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What is osmosis?
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*Diffusion of water across a selectively permeable membrane.
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What is endocytosis and exocytosis?
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*
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What are the levels of organization in organisms?
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*Cells,tissues, organs, organ systems, organisms
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What three things limit cell size?
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*1. Diffusion
2. DNA 3. Surface-area-to-volume ratio |
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What controls the cell cycle?
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*proteins and enzymes
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What would happen if a freshwater paramecium were placed in saltwater?
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*The water outside the paramecium has a higher salt concentration than the inside of the paramecium. Therefore, due to osmosis, the water inside the paramecium will move to the outside and dry out.
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Draw and label what is happening during the four phases of mitosis. (prophase, metaphase, anaphase, telophase)
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*
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Chromosomes
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*
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Chromatid
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*
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Interphase, stages
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*
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Results of Mitosis
(tissues, organs, systems) |
*
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Cancer
(Causes, Prevention) |
*
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Cyclins / enzymes / genes
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*
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Limits to cell size:
1. Diffusion 2. DNA 3. Surface area to volume ratio |
1.
2. 3. |
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Types of solutions:
1. Hypertonic 2. Hypotonic 3. Isotonic |
1. Hypertonic:
2. Hypotonic: 3. Isotonic |
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Diffusion
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*
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Osmosis (Control)
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*
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Passive Transport
(types, examples) |
*
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Active Transports
(types, examples) |
*
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Endocytosis / Exocytosis
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Endocytosis:
Exocytosis: |
