Transcript Eukaryotic Cells II new with plant

December 9th
• Please take a paper off the desk
in front
• Eukaryotic cells animal and plant
• Microscope label
• E- slide lab
Eukaryotic Cells
Eukaryotic Cells
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Has a “true” nucleus
Organelles are
covered in
membranes
Metabolic processes
occur on the
membrane’s surfaces
Eukaryotic Cells
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Membrane covered
organelles provide
compartments that
enable the cell to
carry out a variety
of metabolic
activities
simultaneously
Nucleus
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Genetic control center
Contains
chromosomes made
up of DNA
Contains nucleolus
where ribosomes are
made
Cytoplasm
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Gel – like liquidy
material between the
nucleus and cell
membrane
Fills the cell
Cell Membrane
Controls what goes in and out of the cell
Ribosomes
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Ribosomes assemble
amino acids into
proteins as directed
by the DNA
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Power House
Carries out cellular
respiration which
converts chemical
energy into ATP
ATP is the energy used
in cells
Has its own copy of
DNA
Mitochondria
Mitochondria
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The mitochondria was
believed to be a
single cell at one
time
It was absorbed into
the plant/animal cell
That is why it has its
own DNA
Endomembrane System
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Five organelles that
work together in the
synthesis, storage
and export of
important molecules
Rough and Smooth
E.R., Golgi Apparatus,
Lysosomes, Vacuoles
Endoplasmic Reticulum
Rough ER
Result of ribosomes
which attach to the
network of flattened
sacs attached to
nuclear envelope
Manufactures membrane
Produces proteins that
are secreted from the
cell
Smooth ER
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Attached to Rough ER,
network of connected tubes
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Synthesizes lipids
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Regulates sugar release and
breaks down drugs and toxins
Stores calcium ions necessary
for contraction in muscle
tissue
Golgi Apparatus or Golgi Bodies
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Stacks of flattened sacs
Receives and modifies
substances from ER
Sends them to the cells
surface for export, or to
other organelles
Lysosomes
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Produced by Rough ER and
Golgi Apparatus
Sacs of digestive enzymes,
isolated from the rest of
the cytoplasm
Digest food, destroy
harmful bacteria, recycle
damaged organelles
Vacuoles
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Different shapes and
sizes
Stores water, vital
chemicals or waste
products
Larger in plant cells
Centrioles
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Every animal-like cell has
two small organelles
called centrioles.
Not in plant cells
They are there to help
the cell when it comes
time to divide.
Cytoskeleton
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Supportive meshwork
of fine fibers that
extend throughout
the cytoplasm
Involved in cell
movement and
transmitting signals
Plant Cells
Plant Cells differ from animal
cells in three ways:
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Cell wall – made from
cellulose, gives rigidity shape
Plastids
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Chloroplasts –
photosynthesis
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Leukoplasts – store
starch
Vacuoles – large which
store water and waste
Lysosomes?
Chloroplasts
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Convert solar
energy to chemical
energy
Photosynthesizing
organelle of plants
Contains DNA!
Chloroplasts
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Believed to be a
single cell that was
engulfed by the plant
cell
That is why it has its
own copy of DNA
Photosynthesis
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Photosynthesis is the process by which plants use
light energy to make sugar and oxygen gas from
carbon dioxide and water
6CO2 + 6H2O+ Light => C6H12O6 +O2
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http://www.bozemanscience.com/a-tourof-the-cell