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16 Cards in this Set
- Front
- Back
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What has a nuclear envelope, histones and membrane-bound organelles?
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A eukaryotic cell
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What distinguishes the nuclear envelope from the cell membrane and membrane of most organelles?
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It has a double membrane
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What structure organizes the nuclear envelope and forms interactions between the nuclear envelope and chromatin?
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Nuclear Lamina
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What is anchored in nuclear envelope by glycoprotein GP210?
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Nucleoporins
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What must a larger molecule have to get in our our of the nucleus?
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Nuclear localization signal --requires ATP
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What do DNA, Histone & Non-histone proteins make up?
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chromatin
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What does a double-helical DNA molecule (146 DNA BPs) wrapped around a core of 4 types of histones and an additional 48-bp segment (linker region) make up?
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Nucleosome
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What is condensed chromatin during interphase and mitosis called?
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Interphase: Euchromatin
Mitosis: heterochromatin |
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What structure synthesizes rRNA?
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Nucleoulus; Chromosomes 13, 14, 15, 21 & 22
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What are the two parts of cellular reproduction or cellular cycle?
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Mitosis & Interphase
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Which phase of mitosis does chromatin condense?
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Prophase
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Which phase of mitosis does chromosomes line up on equator?
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metaphase
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Which phase of mitosis do sister chromatids migrate to opposite poles?
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Anaphase
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What phase of mitosis is the purse-string constriction?
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Telophase
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What's is the longest and most variable phase of cell cycle?
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Interphase G1
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Which phase of cell cycle are terminally differentiated cells?
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G0
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