daily question 4/27/2015 thinking back to friday, what would you have done differently in order to...
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Daily Question 4/27/2015
Thinking back to Friday, what would you have done differently in order to build a taller structure? Please think more about group dynamic then the physical structure.
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Parts of the Eukaryotic Cell Structures are
determined by function
3 main components Cell membrane Nucleus Other organelles
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OrganellesTiny cell structures that carry out
specific functions within the cell. Produce energy, build and transport
needed materials, and store and recycle wastes
Can you name any???
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Cell Membrane Controls which
substances pass in and out of the cell (selectively permeable)
Made of lipids and proteins
“Doorman”
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Cytoplasm Area between cell
membrane and nucleus
Contains organelles “floor”
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Nucleus Stores DNA “Manager” Nuclear membrane
– double membrane surrounding nucleus
Nuclear pores – small holes in nuclear envelope
Nucleolus – where ribosomes are synthesized
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Chromatin Are thin strands
floating in the nucleus.
Contain the genetic material (DNA), or the instructions that direct the functions of the cell.
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Mitochondria Site of chemical
reactions 2 membranes
Smooth outer Inner membrane
Cristae – increase surface area
Has own DNA “Generator/
Powerhouse”
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Endoplasmic Reticulum System of membranous
tubules and sacs that help molecules move from one part to another
Amount depends on cell activity
“Conveyer belt” Rough - Have
ribosomes Smooth – Don’t have
ribosomes
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Ribosomes Not surrounded by
membrane Assembles protein Free or Attached to
ER “Machines”
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Daily Question 5/7/151. Draw an animal cell. Label the cell
membrane, cytoplasm and nucleus. 2. What form is DNA found in the
nucleus? Or what is long strands of genetic material?
3. What does the mitochondria do?
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Golgi Body Processing,
packaging and secreting organelles
Works with ER; modifies proteins exported by the cell
“Packaging and Shipping Plant
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Lysosomes Enclose hydrolytic
enzymes w/in a single membrane
Digests proteins, carbs, lipids, DNA, RNA, old organelles
“Security/Janitor”
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Cytoskeleton Network of long
protein threads located in cytosol
Maintains shape and size
Participates in movement
“Dropped Ceiling” 2 types
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Microfilaments Thin threads of
protein (actin) Contribute to cell
movement and contraction of muscles
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Microtubules Hollow tubes,
largest strands of cytoskeleton
Make up spindle fibers in cell division
Example is a Centriole.
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Cilia and FlagellaHair like organelles that extend from
surface of cellAssist in movementComposed of nine pairs of microtubules
arranged around a central pair
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Daily Question 5/8/15Get out your
animal cell coloring. We will finish coloring in the next 5 – 7 minutes.
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Plant Cells 2 different structures
Cell wall Chloroplast
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Cell Wall Lies outside the cell
membrane Rigid, helps support
and protect plant Contains cellulose
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Chloroplasts Chloroplasts
Convert sunlight into chemical energy in the thylakoid
Green!
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Vacuoles Fluid filled organelle
Stores enzymes and metabolic waste
Can be LARGE
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Bacterial Cells Has a cell wall and
cell membrane but DOES NOT have a nucleus.
Bacterial Cells are much smaller
No nucleus = Prokaryotic
Nucleus = Eukaryotic EUKS have NUCS,
PROS DON’T
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Specialized CellsAre found in multi-cellular organismsThe structure of each kind of cell is
suited to the unique function it carries out within the organism.
How is a blood cell suited for the job that it does? Nerve Cell?
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