Eukaryotic Cell Structures & Functions An Organelle Is: A minute structure within a plant or animal cell that has a particular job or function.

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Presentation transcript:

Eukaryotic Cell Structures & Functions

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

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)

Chloroplast= absorbs light, changes light energy into chemical energy for photosynthesis = GREEN Sacks

PLANT CELL Cell wall Large vacuole Chloroplast

Found in both Plant and Animal Cells Cell Membrane= Semi-permeable, controls what enters and leaves the cell, outer containment envelope. Cytoskeleton = gives structure to a cell (#14)

ANIMAL PLANT Nucleus Cell Membrane

Control center for plant and animal cells: This organelle controls cell activities and reproduction

Animal Cell Nucleus Nucleolus= “little nucleus ”

Nucleus = control center for activities & reproduction, DNA & chromosomes housed here. Nucleolus = contains and makes RNA Control center for plant and animal cells:

Chromosome = coiled DNA: contains instruc- tions for char- acteristics of an organism. Chromatin = protein composing chromosomes

Red Blood Cells have no: nucleus

Nuclear membrane = protects and controls what goes in and out of the nucleus (notice the nuclear pores in this picture of a nucleus) Control center for plant and animal cells:

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: Where proteins 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 water Why are plant vacuoles larger than animal vacuoles? Plant Vacuole

Do you see 2 Contractile vacuoles in this Paramecium? Some Animal cell vacuoles pump water out by contracting :

Lysosome: Contains digestive enzymes Breaks down large molecules

Mitochondria = site where energy is released from glucose in the form of: The power house of the cell: ATP

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