Chapter 3 Cells: The Basic Units of Life

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Chapter 3Cells The Basic Units of Life
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A group of similar cells that work together to
perform a specific job in the body
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Tissue

• A group of similar cells that work together to
  perform a specific job in the body

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A combination of two or more tissues that work
together to perform a specific function in the
body
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Organ

• A combination of two or more tissues that work
  together to perform a specific function in the
  body

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A group of organs working together to perform
body functions
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Organ system

• A group of organs working together to perform
  body functions

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Anything that can independently carry out life
processes
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Organism

• Anything that can independently carry out life
  processes

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Made of a single cell
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Unicellular

• Made of a single cell

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Made of many cells
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Multicellular

• Made of many cells

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A group of individuals of the same species that
live together in the same area at the same time
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Population

• A group of individuals of the same species that
  live together in the same area at the same time

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All of the populations of different species that
live and interact in an area
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Community

• All of the populations of different species that
  live and interact in an area

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A community of organisms and their nonliving
environment
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Ecosystem

• A community of organisms and their nonliving
  environment

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A phospholipid layer covers a cells surface and
acts as a barrier between the inside of a cell
and the cells environment
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Cell membrane

• A phospholipid layer covers a cells surface and
  acts as a barrier between the inside of a cell
  and the cells environment

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Structures within a cell, sometimes surrounded by
a membrane
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Organelles

• Structures within a cell, sometimes surrounded by
  a membrane

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Cellular fluid surrounding a cells organelles
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Cytoplasm

• Cellular fluid surrounding a cells organelles

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Membrane-covered organelle found in eukaryotic
cells that contains a cells DNA and serves as a
control center for the cell
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Nucleus

• Membrane-covered organelle found in eukaryotic
  cells that contains a cells DNA and serves as a
  control center for the cell

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Describes a cell that does not have a nucleus or
any other membrane-covered organelles also
called bacteria
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Prokaryotic

• Describes a cell that does not have a nucleus or
  any other membrane-covered organelles also
  called bacteria

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Describes a cell that has a nucleus
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Eukaryotic

• Describes a cell that has a nucleus

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Extremely small single-celled organisms without a
nucleus prokaryotic cells
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Bacteria

• Extremely small single-celled organisms without a
  nucleus prokaryotic cells

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A structure that surrounds the cell membrane of
some cells and provides strength and support to
the cell membrane
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Cell wall

• A structure that surrounds the cell membrane of
  some cells and provides strength and support to
  the cell membrane

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A small organelle in cells where proteins are
made from amino acids
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Ribosome

• A small organelle in cells where proteins are
  made from amino acids

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A membrane-covered cell organelle that produces
lipids, breaks down drugs and other substances
and packages proteins for delivery out of the cell
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Endoplasmic reticulum (ER)

• A membrane-covered cell organelle that produces
  lipids, breaks down drugs and other substances
  and packages proteins for delivery out of the cell

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Cell organelles surrounded by two membranes that
break down food molecules to make ATP
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Mitochondria

• Cell organelles surrounded by two membranes that
  break down food molecules to make ATP

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An organelle found in plant and algae cells where
photosynthesis occurs
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Chloroplast

• An organelle found in plant and algae cells where
  photosynthesis occurs

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The cell organelle that modifies, packages, and
transports materials out of the cell
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Golgi complex

• The cell organelle that modifies, packages, and
  transports materials out of the cell

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A membrane-covered compartment in a eukaryotic
cell that forms when part of the cell membrane
surrounds an object and pinches off
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Vesicle

• A membrane-covered compartment in a eukaryotic
  cell that forms when part of the cell membrane
  surrounds an object and pinches off

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A large membrane-covered structure found in plant
cells that serve as storage containers for water
and other liquids
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Vacuole

• A large membrane-covered structure found in plant
  cells that serve as storage containers for water
  and other liquids

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A special vesicle in cells that digests food
particles, wastes and foreign invaders
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Lysosome

• A special vesicle in cells that digests food
  particles, wastes and foreign invaders

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