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Cards In This Set
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What is Chromatin?
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Means "color", made of dna and protein, scattered throughout nucleaus, condenses to form chromosomes when cell divides. Thread-unraveled
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What is a Chromosomes?
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Bar-like body of tightly coiled chromatin; visible during cell division
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What is Hydrophobic?
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Water-hating
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What is Hydrophilic?
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Water-loving
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What is Microvilli?
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Finger-like projections that increase surface area for absorption
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What is Flagella?
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Propells cells; only in sperm cells
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What is Cilia?
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Tiny hair like projections on cell surfaces that move in a wavelike manner. Moves across surface of a cell, made of protein.
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What is Tight Junctions?
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Impermeable junctions that bind cells together into leakproof sheets,prevents substances from passing through the extracellular space between cells.
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What are desmosomes?
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Anchoring junctions that prevent cells subjected to mechanical stress from being pulled apart.
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What is Gap Junction?
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Commonly seen in the heart and between embryonic cells, functions mainly allow communication.
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What is free radical?
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Highly reactive chemicals with unpaired electrons that can scramble the structure of proteins and nucleic acids.
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What is a nucleus?
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Control center of the cell. Holds genetic material RNA and DNA
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What is plasma membrane?
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Selectively permeable, maintains boundaries for cell, 2 phospholipid bylayers
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What is cytoplasm?
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Material outside nucleus and inside plasma membrane. Contains: cytosol, organelles, inclusions
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What are ribosomes?
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Sites of protein synthesis, made of protein and RNA, Free in Cytoplasm, attached to rough er
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