Karteikarten
Organelles and their functions
Karten in diesem Stapel (30)
- 1Description of the Plasma MembraneFound on the surface of animal cells and inside cell wall of plant cells. Fluid mosaic model of phospholipid bi-layer
- 2Function of the Plasma MembraneRegulates movement of substances entering and leaving cell (diffusion, facilitated diffusion and active transport). Has receptor molecules which allow it to respond to chemicals like hormones
- 3Description of the Cell WallRigid structure surrounding cell (NOT ANIMAL CELL). Made of cellulose in plant cells and chitin in fungi
- 4Function of the Cell WallSupports plant cell
- 5Description of the NucleusOrganelle which controls activity of the cell. Surrounded by the nuclear envelope (double membrane containing pores). Inside the nucleus there is chromatin and nucleolus
- 6Function of the NucluesChromatin: Made from protein and DNA forming chromosomes (Controls activity of the cell)
Nucleolus: Produces ribosomes
Nuclear Envelope: Double membrane allowing things in (RNA) and out (Ribosomes) - 7Description of a LysosomeOrganelle containing digestive enzymes surrounded by membrane
- 8Function of a LysosomeContains digestive enzymes which break down old organelles and invading cells. These can then be re-used by the cell
- 9Description of a RibosomeOrganelle involved in protein synthesis. Composed of 2 sub units (Large sub unit and small sub unit). Found free in the cytoplasm or attached to RER
- 10Function of a RibosomeThey produce proteins by joining amino acids by using mRNA from the nucleus in protein synthesis
- 11Description of the Rough Endoplasmic ReticulumContinuous network of cisternae and is attached to the nuclear envelope. Contains ribosomes
- 12Function of the Rough Endoplasmic ReticulumUsed for the transport, synthesis and export of proteins into the lumen.
- 13Description of the Smooth Endoplasmic ReticulumContinous network of cisternae but contain no ribosomes like RER
- 14Function of the Smooth Endoplamic ReticulumProcess and synthesis lipids and also steroids
- 15Description of a VesicleFluid-filled sac surrounded by a membrane found in the cytoplasm
- 16Function of a vesicleResponsible for the transport of substance in and out of the cell via the plasma membrane and also to other organelles inside the cell. Produced by the Golgi body or the ER
- 17Description of the Golgi BodySeries of flattened sacs known as cisternae
- 18Function of the Golgi BodyProcess and package proteins and lipids for excretion. THEY ALSO PRODUCE LYSOSOMES
- 19Description of a MitochondrionDouble membrane. Inner membrane folded into cristae surrounded by the matrix
- 20Function of a MitochondrionSite of AEROBIC respiration. Where ATP is produced
- 21Description of the ChloroplastFlattened structure surrounded by a double membrane. They contain membrane bound disc shaped structures which contain chlorophyll. They are arranged into stacks called grana (Singular: Granum). These are linked together by lamellae
- 22Function of the ChloroplastSite of photosynthesis. Happens in the grana or the stroma (fluid inside chloroplasts)
- 23Description of the CentrioleSmall, hollow cylinders containing a ring of micro tubules
- 24Function of the CentrioleInvolved in the separation of chromosomes in cell divisions
- 25Description of the CilliaHair like structures found on the surface of the cell. It is a 9 + 2 arrangement of micro-tubules surrounded by a membrane
- 26Function of the CilliaMicro-tubules allow cilia to move which allows substances t be able to move across the surface of the cell
- 27Description of the FlagellumThey stick out of the cell surface and is surrounded by the plasma membrane. Arrangement of 9 + 2 of micro-tubules
- 28Function of the FlagellumAs micro-tubules the moving the flagellum which moves the cell.
- 29What is the cytoskeleton?A network of protein threads in the cytoplasm made up of micro-filaments (small solid strands) and micro-tubules (small protein cylinders)
- 304 Main Functions of the Cytoskeleton1. Supports cells organelles keeping them in position
2. Strengths cell and helps maintains it shape.
3. Allows inter cellular movement of substances. Eg Chromosomes during cell division
4. Allows cell to move. Cilia and Flagellum are made of micro-tubules and are responsible for movement
Informationen
- Beschreibung
- Organelles and their functions
- Erstellt von
- Alan Manjali
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- 31
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