cell organelles
DESCRIPTION
This is a simple presentation on Cell organelles made for students.My message to all the students is that this has been made just to give you an idea so that you can learn something and can make a new presentation yourself.This is also a presentation made by a 14 year child.This is specially made for the students of 8th and 9th.Learn from it.TRANSCRIPT
BIOLOGY PROJECT ON:
CELL ORGANELLES
In cell biology, an organelle is a specialized subunit within a
cell that has a specific function, and is usually separately enclosed within its own
lipid bilayer.
The Cell Organelles are as follows:
• Cell Membrane• Cell Wall• Nucleus• Cytoplasm• Endoplasmic Reticullum• Ribosomes• Golgi Bodies• Mitochondria• Plastids• Vacuoles• Lysosomes
Cell Membrane
• Outer boundary of cell
• Protects the cell
• Controls what enters and leaves the cell
Cell Wall
• Only found in plant cells
• Adds protection and support
• Made of cellulose.• Allows water and
dissolved substances to pass through.
The Nucleus
• Controls most activities in the cell
• Contains all genetic information in the form of DNA.
Cytoplasm
• Clear fluid within cell that contains all organelles
• Moves materials throughout the cell
Endoplasmic Reticulum
• Series of folded membranes that form sacs or tubes
• Rough ER has ribosomes attached
Ribosomes
• Transports materials between the cytoplasm and nucleus
• Makes proteins in the cell
• May be free in cytoplasm or attached to ER
• Proteins are vital to life- all cells must produce them
Golgi Bodies
• Saclike membranes used for storing/ packaging of chemicals
• Cells that make saliva or mucus have many Golgi bodies
Mitochondria
• Energy producers
• Powerhouse of the cell
• Sausage-shaped
• Many mitochondria in muscle cells
Plastids
• Only found in plants/ algae
• Contain food or pigments
• Leucoplasts store food• Chloroplasts contain
the pigment chlorophyll
Vacuoles
• Store food, water, or waste materials
• Plant cells have large vacuoles
Lysosomes
• Found in Golgi bodies
• Contain digestive enzymes to digest unwanted particles
• Help white blood cells to destroy bacteria
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