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23 Cards in this Set
- Front
- Back
What is the function of the nucleoli?
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The site where ribosomes are assembled; ribosomes serve as sites for protein synthesis
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The cytoplasm is made up of...
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-cytosol
-organelles -inclusions |
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What are the three subdivisions of the nucleus?
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Nuclear membrane, nucleoli, and Chromatin
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Prophase
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-centrioles form spindle
-nuclear membrane disappears |
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What are the stages of mitosis
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Prophase, Metaphase, Anaphase, Telophase
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What happens during DNA replication?
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-helix uncoils and graduallly seperates into templates
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Telophase
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-spindle breaks
-two nuclear membranes and nucleoli appear |
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What is the plasma membrane made up of?
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Lipids, cholesterol, and proteins
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What is the function of chromatin?
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NOTHING! Until the cell divides, then it makes chromosomes.
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Metaphase
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-chromosomes travel to center of spindle forming a straight line
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Anaphase
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-chromosomes move towards poles of cell
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The function of the mitochondria is.....
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supplying most of the ATP in the cell
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DNA replication happens when?
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Before mitosis; towards the end of interphase
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What is the function of the endoplasic reticulm?
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Smooth --> cholesterol synthesis
Rough --> protein synthesis |
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What is the function of gologi appartus?
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"Traffic director" for proteins
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Function of Lysosomes
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Digesting old or worn-out cells
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Three different types of solutions for osmosis
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-isotonic (concentrations are equal)
-hypotonic (mre concentration inside) -hyperonic (more concentration outside) |
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What are the two types of transport?
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Passive (doesn't need ATP) and Active (needs ATP)
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Two types of passive transport
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-Diffusion (simple, facilitated, and osmosis)
-Filtration |
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The lif cycle of a cell has two parts:
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Interphase and Cell Division
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Two types of active transport
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Solute pumping and bulk transport
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Two types of bulk transport
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-Endocytosis (in the cell)
-Exocytosis (out of cell) |
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Substances that need solute pumping
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Some sugars, ion and amino acids
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