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Looking Inside
Cells
Organelles
 Inside a cell are tiny
structures called
organelles, which
carry out specific
functions in the cell.
 Some o...
Cell Wall
 The cell wall is a
rigid layer of
nonliving material
that surrounds plant
cells.
 It helps protect and
suppor...
Cell Membrane
 All cells have a cell membrane.
 In cells that do not have cell walls, the cell
membrane is the outside b...
Mitochodria
 Rod-shaped organelles called
mitochondria produce energy.
Vacuoles
 A large sac called a
vacuole stores food
and other materials
in the cell.
Lysosomes
 Small, round
structures called
lysosomes break
down food and
recycle old cell
parts.
Chloroplasts
 In plants and some
other organisms,
large, green
structures called
chloroplasts
capture energy from
sunligh...
Organelles in the Cytoplasm
 The cytoplasm is the region between
the cell membrane and the nucleus.
 Many cell organelle...
Nucleus
 The nucleus is a
large, oval structure
that acts as the
“brain” of the cell.
 You can think of
the nucleus as t...
Nuclear Membrane
 The nucleus is
surrounded by a
nuclear membrane.
 Materials pass in
and out of the
nucleus through
sma...
Chromatin and Nucleolus
 Floating in the
nucleus are thin
strands called
chromatin, which
contains the genetic
material, ...
Endoplasmic Reticulum
 A maze of
passageways called
the endoplasmic
reticulum carries
proteins and other
materials from o...
Ribosomes
 Small, grainlike
bodies called
ribosomes produce
proteins.
Golgi Bodies
 Collections of sacs
and tubes called
Golgi bodies
distribute proteins
and other materials
throughout the ce...
Bacterial Cells
 A bacterial cell is
smaller than a plant
or animal cell.
 While a bacterial
cell does have a
cell wall ...
Bacterial Cells
 Organisms whose cells lack a nucleus
are prokaryotes; those whose cells
have a nucleus are eukaryotes.
Specialized Cells
 In many-celled organisms, the cells are often
quite different from each other.
 The structure of each...
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
Looking inside cells notes (1)
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Transcript of "Looking inside cells notes (1)"

  1. 1. Looking Inside Cells
  2. 2. Organelles  Inside a cell are tiny structures called organelles, which carry out specific functions in the cell.  Some organelles include the cell wall, cell membrane, and nucleus.
  3. 3. Cell Wall  The cell wall is a rigid layer of nonliving material that surrounds plant cells.  It helps protect and support a cell. Although the cell wall is stiff, many materials can pass through it.
  4. 4. Cell Membrane  All cells have a cell membrane.  In cells that do not have cell walls, the cell membrane is the outside boundary that separates the cell from its environment.  There are tiny openings, or pores, in the cell membrane through which materials can enter or leave the cell.  One of the cell membrane’s main functions is to control what substances come into and out of a cell.
  5. 5. Mitochodria  Rod-shaped organelles called mitochondria produce energy.
  6. 6. Vacuoles  A large sac called a vacuole stores food and other materials in the cell.
  7. 7. Lysosomes  Small, round structures called lysosomes break down food and recycle old cell parts.
  8. 8. Chloroplasts  In plants and some other organisms, large, green structures called chloroplasts capture energy from sunlight and use it to produce food for the cell.
  9. 9. Organelles in the Cytoplasm  The cytoplasm is the region between the cell membrane and the nucleus.  Many cell organelles are found in the cytoplasm.  The organelles function to produce energy, build and transport needed materials, and store and recycle wastes.
  10. 10. Nucleus  The nucleus is a large, oval structure that acts as the “brain” of the cell.  You can think of the nucleus as the cell’s control center, directing all of the cell’s activities.
  11. 11. Nuclear Membrane  The nucleus is surrounded by a nuclear membrane.  Materials pass in and out of the nucleus through small openings, or pores, in the nuclear membrane.
  12. 12. Chromatin and Nucleolus  Floating in the nucleus are thin strands called chromatin, which contains the genetic material, or the instructions for cell functions.  The nucleus also contains the nucleolus, a structure where ribosomes are made.
  13. 13. Endoplasmic Reticulum  A maze of passageways called the endoplasmic reticulum carries proteins and other materials from one part of the cell to another.
  14. 14. Ribosomes  Small, grainlike bodies called ribosomes produce proteins.
  15. 15. Golgi Bodies  Collections of sacs and tubes called Golgi bodies distribute proteins and other materials throughout the cell.
  16. 16. Bacterial Cells  A bacterial cell is smaller than a plant or animal cell.  While a bacterial cell does have a cell wall and a cell membrane, it does not contain a nucleus.
  17. 17. Bacterial Cells  Organisms whose cells lack a nucleus are prokaryotes; those whose cells have a nucleus are eukaryotes.
  18. 18. Specialized Cells  In many-celled organisms, the cells are often quite different from each other.  The structure of each kind of cell is suited to the function it carries out in the organism.
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