organells structure and function
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- Created by: shauna gardner
- Created on: 17-09-13 11:45
Descirbe the nucleus structure
largest organelle with patches of chromatin. it is surrounded by nuclear envolope. 2 membranes with fluid between them and nuclear pores. contains chromasomes/DNA
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What is the function of the Nucleus
stores the cells genetic material. The cromatin consists of DNA and proteins. contains instructions for making protiens and makes RNA and ribosomes
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Describe the nucleolus structure
dense, spherical structure inside the nucleus
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What is the function of the nucleolus
makes the RNA and ribosomes which pass through the cytoplasm and are used for protein synthesis
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Describe the strucure of ribosomes
tint organelles 20nm diameter. found in cytoplasm some attached the ER. contains two sub units- one large and one small
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what is the function of ribsomes
the site where protein synthesis occurs and proteins are made
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describe the structure of mitochondria
they are oval shaped with a double membrane that is folded to make cristae which forms the central part of the mitonchondria called matrix
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whats is the function of mitochondria
Produces adenosine triphosate (ATP) during respiration. they produce the energy for the cell to be driven
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Describe the structure of lysosomes
Spherical sacs with single membrane
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whats is the function of lysosomes
contain powerful digestive enzymes- break down material such as bacterium that entre the cell via the endocytosis
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describe the structure of chloroplasts
a flatened structure. double membrane and membranes inside called thylakoid membranes and are stacked up to from grana. these linked together by lamellae
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what is the function of a chloroplast
site where photosynthesis takes place- happen in grana or stroma. carabohydrate molecules are made by water and carbon
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describe the structure of the plasma membrane
found in animal and plant cells and made up of lipids and proteins
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what is the function of a plasma membrane
regulates the movement of substances into and out the cell. recpetor cells that allow it to respond to chemicals like hormones
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describe the structure of a cenriole
small, hollow cylinders containsing a ring of microtubules
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whats is the function of cenriole
involved with speration of chromosomes during cell division
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describe the structure of cilia
small, hair like structures found surface of membrane some animals. they have outer membrane and ring of nine protien microtubeles
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what is the function of a cilia
microtubelues allow the cillia to move. this helps move substances along the cell suface
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describe the structure of a flagellum
like cilla but longer and stick out from cell surfac- surrounded plasma membrane. two microtubles in the centre and nine pairs around the edges
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whats is the function of a flaggellum
microtubules contract to make the flagellum move. they are used to propel cells forward eg sperm
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describe the structure of a golgi appartatus
A stack of membrane-bound, flattened sacs
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whats is the function of a golgi appartatus
recieves proteins from the ER and moderifies them. it also makes lysosomes
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describe the structure of a vesicle
small fluid-filled sac in cytoplasm surrounded by membrane
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what is the function of vesicle
transports substances in and out the cell and between organells.
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describe the structure of smooth endoplasmic reticulum
system of flattened membranes enclosing a fluid filled space called cisternae
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whats is the function of smooth endoplasmic reticulum
synthesises and produces lipids
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describe the structure of rough endoplasmic reticulum
ystem of flattened membranes enclosing a fluid filled space called cisternae. they have there suface covered in ribosomes
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what is the rough endoplasmic reticulums function
olds and processes proteins that have been made at ribosomes
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describe the stricture of a cell wall
a rigid structure that surrounds plant cells.made of cellulose
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what is the function of a cell wall
supports plant cells.
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Other cards in this set
Card 2
Front
What is the function of the Nucleus
Back
stores the cells genetic material. The cromatin consists of DNA and proteins. contains instructions for making protiens and makes RNA and ribosomes
Card 3
Front
Describe the nucleolus structure
Back
Card 4
Front
What is the function of the nucleolus
Back
Card 5
Front
Describe the strucure of ribosomes
Back
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