; cell cell • The basic unit
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cell cell • The basic unit

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  • pg 1
									                      cell
• The basic unit of
  structure and function
  that makes up all
  living things
• Keyword: container
• Think: “The cell
  contains organelles
  and cytoplasm.”
               prokaryote
• A single-celled
  organism that has no
  nucleus
• Keyword: bacterium
• Think: “Since
  bacterial cells have no
  nucleus, they are
  considered to be
  prokaryotes.”
                eukaryote
• An organism whose
  cells contain a nucleus
• Keyword:
  multicellular
• Think: “Multicellular
  organisms like plants
  and animals are
  eukaryotes because
  their cells have a
  nucleus.”
      receptor molecules
• Protein molecules found
  on the cell membrane that
  can receive chemical
  messages from the blood
  or other cells
• Keyword: receive
• Think: “The brain cell’s
  receptor molecule
  received a message from a
  sensory nerve cell.”
                  organelle
• A structure within a
  cell that carries out a
  specific function
• Keyword: cell organ
• Think: “The
  mitochondria is an
  organelle that makes
  energy for the cell.”
                   tissue
• A group of specialized
  cells that work
  together to perform a
  specific function
• Keyword: muscle
• Think: “Muscle tissue
  is made of muscle
  cells that work
  together to move the
  body.”
                      organ
• A body structure made of
  different kinds of tissue
  that combine to perform a
  specific function.
• Keyword: stomach
• Think: “The stomach is an
  organ made up of smooth
  muscle tissue, lining
  tissue, enzyme-producing
  tissue, and acid-producing
  tissue.”
           organ system
• Several organs that
  work together to
  perform a major
  function of the body
• Keyword: function
• Think: “The digestive
  system performs the
  function of absorbing
  nutrients into the
  blood.”
                organism
• a living thing
• Keyword: alive
• Think: “Since a
  golden poison frog is
  alive, it is an
  organism.”
            homeostasis
• the ability of an
  organism to maintain a
  stable internal
  environment
• Keyword: stable
• Think: “The mouse
  keeps a stable
  temperature even
  when environmental
  conditions change.
                bacteria
• a single-celled
  organism that lacks a
  nucleus
• Keyword: germ
• Think: “Some bacteria
  can cause disease;
  others are healthy.”
            differentiation
• The process that
  transforms stem cells
  into different types of
  specialized cells
• Keyword: stem cell
• Think: “Stem cells
  differentiate into
  muscle cells, skin
  cells, nerve cells, etc.”
                         protist
• a single-celled organism
  whose organelles are
  surrounded by a
  membrane
• Keyword: Paramecium
• Think: “The paramecium
  is an example of a protist.”
               animal cell
• A type of cell that has
  no cell wall and needs
  to get energy from
  other organisms
• Keyword: eat
• Think: “Animals need
  to eat so their cells can
  get energy.”
                  plant cell
• A type of cell that has a
  cell wall and chloroplasts
  and can make its own food
  by absorbing sunlight
• Keyword: photosynthesis
• Think: “A plant absorbs
  sunlight and carbon
  dioxide to make glucose
  and oxygen.”

								
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