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25 Cards in this Set
- Front
- Back
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Stephen Fyler 7.2
ion |
an atom or group of atoms with a postive or netgative electrical charge
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Stephen Fyler 7.2
plasma membrane |
the flexible boundary between the cell and its environment, which allows a steady supply of nutrients to come into the cell no matter what the external conditions are
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Stephen Fyler 7.2
selective permeability |
a process in which a membrane allows some molecules to pass through while keeping others out
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Stephen Fyler 7.2
phospholipid |
lipids with an attached phosphate group; it has a glycerol backbone, two fatty acid chains, and a phosphate group
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Stephen Fyler 7.2
fluid mosaic model |
the model of the plasma membrane where molecules are free to move sideways within a lipid bilayer
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Stephen Fyler 7.2
transport protein |
move needed substances or waste materials through the plasma membrane
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Stephen Fyler 7.3
enzyme |
a protein that speeds up the rate of a chemcial reaction
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Stephen Fyler 7.3
cell wall |
a fairly rigid structure located outside the plasma membrane that provides additional support and protection
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Stephen Fyler 7.3
chromatin |
strands of the genetic material, DNA; contains the master set of directions for making proteins
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Stephen Fyler 7.3
nucleolus |
makes ribosomes and is within the nucleus is a prominent organelle
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Stephen Fyler 7.3
ribosome |
the sites where the cell produces proteins according to the directions of the DNA
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Stephen Fyler 7.3
cytoplasm |
the clear, gelatinous fluid inside a cell
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Stephen Fyler 7.3
endoplasmic reticulum |
the site of cellular chemical reactions; an organelle in a eukaryotic cell
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Stephen Fyler 7.3
Golgi apparatus |
a flattened stack of tubular membranes that modifies the proteins
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Stephen Fyler 7.3
vacuole |
membrane-bound compartments in cells for temporary storage of materials
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Stephen Fyler 7.3
lysosome |
organelles that contain digestive enzymes
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Stephen Fyler 7.3
chloroplast |
cell organelles that capture light energy and convert it to chemical energy
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Stephen Fyler 7.3
plastid |
plant organelles used for storage
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Stephen Fyler 7.3
chlorophyll |
a green pigment that traps light energy and gives leaves and stems their green color
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Stephen Fyler 7.3
mitochondria |
membrane-bound organelles in plant and animal cells that transform energy for the cell
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Stephen Fyler 7.3
cytoskeleton |
the support structure of a cell within the cytoplasm
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Stephen Fyler 7.3
microtubule |
thin, hollow cylinders made of protein
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Stephen Fyler 7.3
microfilament |
smaller, solid protein fibers
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Stephen Fyler 7.3
cilia |
short, numerous projections that look like hairs; their motion is similar to that of oars in a rowboat
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flagella
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longer projections that move with a whip-like motion
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