the movement of a molecule or ion through a membrane by pairing wit another molecule or ion
1 of 11
what two ways is the glucose concentration gradient maintained between the inside of the small intestine and the villi?
heart beat circulates blood , muscles int he villi ensure that contents is constantly moving to come in contact with epithelial cells
2 of 11
name 8 things eukaryotic cells have that prokaryotic do not
distinct nucleus , nucleolus, chromosomes , membrane bound organelles, chloroplasts, 80s type ribosome's , made of cellulose
3 of 11
what is the role of the capsule in a bacterial cell ?
to protect from other cells and help groups sticks together for further protection
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what is the role of the flagellum in a bacterial cell?
aids movement of bacterial cell because of rotating base and corkscrew shape
5 of 11
what is the role of the plasmid in a bacterial cell ?
possesses genes that aid the survival of bacteria in adverse conditions.
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name 3 structures of a bacterial cell that a human cell does not have ?
flagellum , capsule and plamid
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how does cholera bacterium cause disease ?
they use there flagella to get to cell surface membrane, once there they split and produce toxins that opens ion channels and releases chloride ions causing water potential to drop
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what is oral rehydration therapy ?
simple treatment for diarrhoea that can be available in LEDCs
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what 5 things does a rehydration solution have to contain ?
water , sodium , glucose, potassium and other ions
10 of 11
what are the advantages of using starch in place of glucose in rehydration therapy's ?
it provides nutrients and is readily available in many parts of the world
11 of 11
Other cards in this set
Card 2
Front
what two ways is the glucose concentration gradient maintained between the inside of the small intestine and the villi?
Back
heart beat circulates blood , muscles int he villi ensure that contents is constantly moving to come in contact with epithelial cells
Card 3
Front
name 8 things eukaryotic cells have that prokaryotic do not
Back
Card 4
Front
what is the role of the capsule in a bacterial cell ?
Back
Card 5
Front
what is the role of the flagellum in a bacterial cell?
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