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Eukaryotic Cell Structures & Functions Ch7.3 (Ch7 Vocabulary Guide)
An Organelle Is: A minute structure within a plant or animal cell that has a particular job or function.
What are some functions that occur within a cell? Digestion Excretion Transportation of cell’s products Storage Protection Division Mobility Respiration or Photosynthesis
Organelles found only in Plants: Cell Walls Cellulose Chloroplasts
Plant Cell • Cellulose = carbohydrate found in cell walls • Cell Wall= forms rigid outer structure, made of cellulose (fiber)
Cell wall Chloroplast Large vacuole PLANT CELL
Found in both Plant and Animal Cells Organelles that surround cells for support: Cell Membrane= Semi-permeable, controls what enters and leaves the cell, outer containment envelope. Cytoskeleton = gives structure to a cell (#14)
Nucleus Cell Membrane ANIMAL PLANT
Control center for plant and animal cells: This organelle controls cell activities and reproduction
Nucleus Nucleolus= “little nucleus” Animal Cell
Control center for plant and animal cells: Nucleus = control center for activities & reproduction, DNA & chromosomes housed here. Nucleolus = contains and makes RNA
Chromosome = coiled DNA: contains instruc-tions for char-acteristics of an organism. Control center for plant and animal cells: Chromatin = protein composing chromosomes
Red Blood Cells have no: nucleus
Control center for plant and animal cells: Nuclear membrane = protects and controls what goes in and out of the nucleus (notice the nuclear pores in this picture of a nucleus)
Ribosomes= Site of Protein Synthesis on the E.R. Endoplasmic Reticulum ROUND Ribosomes
Cytoplasm:or cytosol, = gel surrounds the organelles, contains enzymes
ER = Endoplasmic Reticulum: specializes in the production & transport of lipids and membrane proteins Rough ER has ribosomes Smooth ER lacks ribosomes Ribosomes: Whereproteins are manufactured.
Endoplasmic Reticulum “Rough” with Ribosomes for protein synthesis “Smooth” = Membrane “highway” For transport of materials
Golgi Bodies (aka Golgi Apparatus): where cell products are modified and packaged in vesicles for export from the cell. “Sacks” for making & storing Secretions
Vacuole = storage for food and waterWhy are plant vacuoles larger than animal vacuoles? Plant Vacuole
Some Animal cell vacuoles pump water out by contracting: Do you see 2 Contractile vacuoles in this Paramecium?
Lysosome: Contains digestive enzymes Breaks down large molecules
Chloroplast= absorbs light, changes light energy into chemical energy for photosynthesis = GREEN Sacks
The power house of the cell: Mitochondria = site where energy is released from glucose in the form of: ATP