Bio Structure,Function & Features Quiz Edexcel

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  • Created on: 26-11-10 18:36
Preview of Bio Structure,Function & Features Quiz  Edexcel

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Edexcel AS Bio Structure & Function
Examiners like asking you to relate structure to properties &
function.
You can use the form " X is like this because its function is Y, and its features help with this in
these ways..."
Eg. The structure of amylase has a spiral shape because its function is to store energy .Its shape
makes it compact so it can store more energy.
The Circulatory System Fill in the blanks
Blood Structure Function
vessel
Reduces diffusion distance making
....................... diffusion faster
Capillary
........................ Slows down blood allowing exchange t
take place more efficiently
1. Connective tissue & 1.make them strong & durable
Artery collagen fibres
Note: arteries have 2. Muscle 2.Allows constriction & dilation
more Connective Allows stretch & recoil, helping to push blood forwar
tissue & collagen & elastic tissue
fibres 3.gives smooth surface ,reducing friction
Muscle & elastic 3....................................
tissue
4.......................................... 4. keeps blood under high pressure.
1.Connective tissue & 1.....................................................
Vein collagen fibres
2. 2.Allows constriction & dilation
Muscle Allows stretch & recoil, helping to push blood forwar
& elastic tissue
3.gives smooth surface ,reducing friction
3.endothelium (made up of
epithelial cells)
4.large lumen 4. Keeps blood under low pressure.

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Prevents backflow of blood
Blood Structure Function
vessel
1 cell thick Reduces diffusion distance making
Capillary endothelium diffusion faster
Narrow lumen Slows down blood allowing exchange t
take place more efficiently
3. Connective tissue & 1.make them strong & durable
Artery collagen fibres
Note: arteries have 4. Muscle 2.Allows constriction & dilation
more Connective Allows stretch & recoil, helping to push blood forwar
tissue & collagen & elastic tissue
fibres 3.gives smooth surface ,reducing friction
Muscle & elastic 3.…read more

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Fill in the Functions
Structure Function
Left ventricle has thick wall
Ventricles have thicker walls than atria
Atrioventricular Valves
Semi Lunar Valves
Cords…read more

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Structure Function
Has to pump blood around the body,
Left ventricle has thick wall longer distance than to the lungs.
Ventricles have thicker walls than atria Have to push blood out of the heart
which is a longer distance than from atria
to the ventricles.
Atrioventricular Valves Stop blood flowing back into the atria
when atria contract.
Semi Lunar Valves Stop blood flowing back into ventricles
after ventricles have contacted.…read more

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Carbohydrates-
Carbohydrat Structure Function
e
Glucose 1............................ 1.easily transported
2.Chemical bonds contain a lot of energy 2.good energy source for ...............
& animals
Sucrose 1. Reactive groups are joined to each 1. Good for transport in plants
other, making it...................
2.soluble
2. good for transport in .............
Amylose- joined glucose
Starch Energy storage molecule
monomers with 1, 4 glycosidic
Glycosidic bonds make it easily hydroly
links/bonds.…read more

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Carbohydrates-
Carbohydrat Structure Function
e
Glucose 1.Soluble 1.easily transported
2.Chemical bonds contain a lot of energy 2.good energy source for plants &
animals
Sucrose 1. Reactive groups are joined to each 1. Good for transport in plants
other, making it unreactive.
2.soluble 2. good for transport in plants
Amylose- joined glucose
Starch Energy storage molecule
monomers with 1, 4 glycosidic
Glycosidic bonds make it easily hydroly
links/bonds.…read more

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Highly branched. Has 1, 4 and 1, 6 Can be rapidly hydrolysed, stor
Glycogen
glycosidic links. glucose can be released quickly
A lot of energy can be stored.
Large molecule
-insoluble - has no osmotic effect good for storag
-more glucose in a small space.…read more

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Structure Function…read more

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