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Ch. 7-8 Biology Vocab!! (:

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I.Love.Running !!!

on 4 April 2013

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Transcript of Ch. 7-8 Biology Vocab!! (:

Kaitlin Kittock (: Ch.7-8 Biology Vocab CELL -The basic unit of all forms of life CELL THEORY -A fundamental concept of biology that states that all living things are composed of cells, that cells are the basic unit of life, structure, and function in living things, and that new cells are produced from existing cells Nucleus -A structure that contains the DNA genetic
material Eukaryote -An organism whose cells contain a nucleus Prokaryote -A unicellular organism that lacks a nucleus Cytoplasm -The fluid portions of the cell outside the
nucleus Organelle -A specialized structure that performs
important cellular functions within a
eurkaryotic cell Vacuole -The cell organelle that stores materials such as water,
salts, proteins, and carbohydrates Lysosome -The cell organelle that breaks down lipids, carbohydrates
and proteins into small molecules that can be used by the rest of the cell. Cytoskeleton -The network of protein filaments in a
eukaryotic cell, that gives the cell its
shape and internal organization and is involved in movement Ribosome -A cell organelle consisting of RNA and protein found throughout the cytoplasm in a cell; the site of protein synthesis Endoplasmic Reticulim -The internal membrane system found in eukaryotic cells, the place where lipid
components of all the cell membrane are assembled. Golgi Apparatus -An organelle in cells that modify, sort,
and package proteins and other materials
from the endoplasmic reticulum for
storage in the cell or release outside the
cell. Mitochondrian -A cell organelle that converts the chemical
energy stored in food, into components that are more convenient for the cell to use Lipid Bilayer -A flexible double-layered sheet that makes
up the cell membrane and forms a barrier between the cell and its surroundings. Diffusion -The process by which particles tend to
move from an area are more concentrated
to an area where they are less
concentrated. Facilitated Diffusion -The process of diffusion in which
molecules pass across the membrane
through cell membrane channels Osmosis -The diffusion of water through a selectively
permeable membrane. Osmotic Pressure -The pressure that must be applied to
prevent osmotic movement across a
selectively permeable membrane. Homeostasis -The relatively constant internal physical or
chemical conditions that organisms contain Tissue -A group of similar cells that perform
a particular function Organ -A group of tissues that work
together to perform closely related
functions Organ System -A group of organs that work together
to perform a specific function Adenosine Triphophate (ATP) -One of the principal chemical compounds
that living things use to store and release
energy Heterotroph -A living thing that gets food by consuming
or eating other living things. Photosynthesis -The process by which plants and other autotrophs
use light energy to convert carbon dioxide into
oxygen and high energy carbohydrates such as sugar
and starches. Autotroph -A living thing that can capture energy from sunlight
or chemicals to make it's own food. Light Dependent Reaction -A reaction of photosynthesis
that uses light energy to make AIP
and NADPH.
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