Biology-Cell Structure

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What is the function of a plasma membrane?
Regulates the movement of substances into and out of the cell. it also has receptor molecules on it which allow it to respond to chemicals.
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What is the function of the cell wall?
Supports plant cells
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What is the function of the nucleus?
controls the cells acivities by controlling the transcription of DNA. The pores allow substances to move from the nucleus into the cytoplasm.
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What is the function of the nucleolus?
makes ribosomes
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what is the function of lysosomes?
Contains digestive enzymes. Can be used to digest invading cells or break down worn out components of the cell.
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What is the function of a ribosome?
The site where proteins are made
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What is the function of the rough endoplasmic reticulum?
Folds and processes proteins
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What is the function of the smooth endoplasmic reticulum?
Synethesises and processes lipids.
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What is the function of a vesicle?
Transports substances in and out of the cell and between organelles.
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what is the function of the golgi apparatus?
Processes and packages new lipids and proteins. it alos makes lysosomes
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What is the function of a mitochondrion?
The site of aerobic respiration where ATP is produced.
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What is the function of a Chloraplast?
The site where photosynethesis happens.
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What is the function of a centriole?
Involved with the seperation of chromosomes in cell division
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what is the function of cilia?
Move substances along a cell surface
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What is the function of flagellum?
To move cells forward eg. when a sperm cell moves
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How are organelles involoved in protein production?
1. proteins made at ribosome. 2.The RER folds and processes new proteins 3. transported to the golgi in vesicles 4. undergo more processing at the golgi
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What is the function of the cytoskeleton?
1. support organelles 2. strengthen cell and maintain shape 3. responsible for movement of materials 4. causes the cell to move
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Which cell is smaller, Prokaryotic or Eukaryotic?
Prokaryotic
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What is the difference in DNA in prokaryotes and eukaryotes?
prokaryotes=circular DNA, euakarotes =linear DNA
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what is the cell wall made of in prokaryotes?
polysaccharide
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what is the cell wall made of in eukaryotes
animals=no cell waal, plants=cellulose cell wall, fungi=chitin cell wall
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What is the magnification equation?
magnification=image size/object size
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what is resolution?
How detailed an image is/ how well a microscope can distinguish between two points.
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What is the max resolution and max magnification of a light microscope?
0.2micrometres x1500
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what is the max resolution and max magnification of a transmission electron microscope?
0,0002 micrometres x1000000
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what is the max resolution and max magnifictaion of a scanning electron microscope?
0.002 micrometres x 500000
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What stain do you use for light microscopes?
methylene blue and eosin
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What stain do you use for an electron microscope?
Dipped in solution of heavy metal
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Card 2

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What is the function of the cell wall?

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Supports plant cells

Card 3

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What is the function of the nucleus?

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Card 4

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What is the function of the nucleolus?

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Card 5

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what is the function of lysosomes?

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