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Ch. 8 Cell Cycle
Ables/Brown flashcards review
17
Biology
9th Grade
01/24/2008

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Term
Osmosis
Definition
diffusion of water in order to reach an equal concentration on both inside and outside of cells
Term
Hypotonic Solution
Definition
has a lower concentration of solute (like salt) than the cell cytoplasm around it.
Term
Hypertonic Solution
Definition
has a greater concentration of solute (like salt) than the cytoplasm around it
Term
Isotonic solution
Definition
concentrations are equal
Term
Passive transport
Definition
the movement of materials in and out of the cell without the use of energy. Things move with the concentration gradient from high to low.
Term
Active transport
Definition
the movement of materials where the cell actually uses energy to pump it against the concentration gradient
Term
Carrier Protiens
Definition
Proteins located on cell membranes that attach to certain molecules and move them into the cell
Term
Endocytosis
Definition
where a cell engulfs a particle too large to pass through the memebrane and forms a vacuole around it.
Term
Cell size
Definition
cells have to be small, because if they were too big diffusion could not occur
Term
Interphase
Definition
The normal life f the cell where it carries on metabolic functions
Term
Mitosis
Definition
The reproduction of a normal cell
Term
Prophase
Definition
first stage of mitosis where the copied chromatin pairs coil and are joined in the center by a centromere to form chromosomes
Term
metaphase
Definition
second part of mitosis where the chromosomes move to the equator of the cell
Term
Anaphase
Definition
third stage where centromeres split and move toward poles
Term
Telophase
Definition
The fourth phase where the cell splits to form two new cells and enters the interphase cycle
Term
Cancer
Definition
when cells loose control of the usual cell cycle and uncontrolled dividing takes place
Term
Cell cycle
Definition
The normal life cycle of a cell including interphase and mitosis. It is controlled by enzymes.
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