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18 Cards in this Set
- Front
- Back
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Why are cells small rather than large? |
To allow diffusion and osmosis to work efficiently |
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Name two reasons that cells must make new cells through mitosis & cytokinesis |
-replace the dead cells; repair -growth |
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What is the cell cycle? |
regular pattern of growth, DNA replication, and cell division |
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What are the three parts of the cell cycle? |
Gap(1), Synthesis, Gap(2) |
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What happens during G1 of interphase? |
Cells carry out their normal functions |
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What happens during S of interphase? |
DNA synthesis |
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What happens during G2 of interphase? |
additional growth |
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List the Four Stages of Mitosis in Order |
-Prophase -Metaphase -Anaphase -Telophase |
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What happens during prophase? |
-chromosomes condense -longest phase of mitosis -spindle fibers form -nuclear membrane forms |
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What happens during metaphase? |
-Chromosomes line up in the middle |
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What happens during anaphase? |
-sister chromatids pulled apart to opposite sides of the cell |
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What happens during telophase? |
-two nuclei form -nuclear membrane reforms -chromosomes uncoil back into chromatin |
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What is cytokinesis? |
-cytoplasm separates Animal: membrane pinches into 2 new cells Plant: cell plate separates 2 new cells |
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Why does cytokinesis happen differently in plant and animal cells? |
-Plants have a cell wall while animal does not |
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What is the result of mitosis? |
-two identical daughter cells |
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Relationship between chromatin and chromosomes |
condensed DNA to form chromosomes |
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Stage that chromosomes are visible |
mitosis |
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What are sister chromatids? |
each 1/2 of the condensed duplicated chromosome |
