OrganellesOrganelles of the Plant of the Plant CellCell

By: Valerie By: Valerie GutierrezGutierrez

Plasma MembranePlasma Membrane Consists of a phospholipid bilayerConsists of a phospholipid bilayer Controls molecules movement in and out of the Controls molecules movement in and out of the

cellcell Cell to cell signalingCell to cell signaling Cell adhesionCell adhesion

Cell WallCell Wall Composed primarily of celluloseComposed primarily of cellulose Provides structural supportProvides structural support

                                                                                                               Thomas A. NEWTON

Structure of Cellulose

MitochondriaMitochondria

Powerhouse of the cellPowerhouse of the cell

Main site of ATP productionMain site of ATP production

Consists of an inner membrane and an outer membraneConsists of an inner membrane and an outer membrane

Cristae - foldings in the inner membraneCristae - foldings in the inner membrane

Matrix – central space Matrix – central space

Intermembrane space – space between the membranesIntermembrane space – space between the membranes

Contain their own DNAContain their own DNA

ChloroplastsChloroplasts

Most characteristic organellesMost characteristic organelles

Thylakoids – interconnected membrane-limited Thylakoids – interconnected membrane-limited sacssacs

Contain chlorophyll (green pigment)Contain chlorophyll (green pigment)

Contain their own DNAContain their own DNA

Bounded by two bilayer membranesBounded by two bilayer membranes

Carry out photosynthesisCarry out photosynthesis

VacuolesVacuoles

Can occupy up to Can occupy up to 80% of cell80% of cell

Stores water, ions, Stores water, ions, and nutrientsand nutrients

Degrades Degrades macromoleculesmacromolecules

Functions in cell Functions in cell elongation during elongation during growthgrowth

Maintains turgor in Maintains turgor in cellcell

Endoplasmic ReticulumEndoplasmic Reticulum

Smooth ERSmooth ER Lacks ribosomesLacks ribosomes Synthesizes fatty Synthesizes fatty

acids and acids and phospholipids phospholipids

Rough ERRough ER Do not lack Do not lack

ribosomesribosomes Synthesizes, Synthesizes,

processes, and sorts processes, and sorts secreted proteinssecreted proteins

Smooth Endoplasmic Reticulum

No ribosomes

Golgi ComplexGolgi Complex

Series of flattened Series of flattened membrane sacsmembrane sacs

Cis and trans sideCis and trans side Processes, sorts, Processes, sorts,

and ships proteins to and ships proteins to where they need to where they need to gogo

““Post Office”Post Office”

Trans

Cis

NucleusNucleus Store cell’s DNAStore cell’s DNA Coordinates cell’s Coordinates cell’s

activitiesactivities

Nucleolus- manufactures ribosomesNucleolus- manufactures ribosomes

Nuclear Envelope- double membrane that Nuclear Envelope- double membrane that encloses contents of nucleusencloses contents of nucleus

ReferencesReferences

Kimball, John W. (2000, November). Kimball’s Biology Pages. Retrieved September 23, 2003, Kimball, John W. (2000, November). Kimball’s Biology Pages. Retrieved September 23, 2003, from from http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/P/PlantCell.htmlhttp://users.rcn.com/jkimball.ma.ultranet/BiologyPages/P/PlantCell.html

Carpi, Anthony. (1998-1999). The Cell. Retrieved September 23, 2003, from Carpi, Anthony. (1998-1999). The Cell. Retrieved September 23, 2003, from http://web.jjay.cuny.edu/~acarpi/NSC/13-cells.htmhttp://web.jjay.cuny.edu/~acarpi/NSC/13-cells.htm

Plant Cell Organelles. (1994-2003). Retrieved September 23, 2003, from Plant Cell Organelles. (1994-2003). Retrieved September 23, 2003, from http://www.cellsalive.com/cells/plntcell.htmhttp://www.cellsalive.com/cells/plntcell.htm

Plant Cell Anatomy. (2001-2003). Retrieved September 23, 2003, from Plant Cell Anatomy. (2001-2003). Retrieved September 23, 2003, from http://www.enchantedlearning.com/subjects/plants/cell/http://www.enchantedlearning.com/subjects/plants/cell/

Lodish, Berk, Matsudaira, Kaiser, Krieger, Scott, Zipursky, Darnell. (2003). Lodish, Berk, Matsudaira, Kaiser, Krieger, Scott, Zipursky, Darnell. (2003). Molecular Cell Molecular Cell BiologyBiology. New York: W.H. Freeman and Company.. New York: W.H. Freeman and Company.