OCR Biology F212 Revision [3rd June 2013] (Now Closed)

Are you revising F212 as a hole or by topics/module?

Are you revising F212 as a hole or by topics/module?

want to revise

ask me a question back!!!

want to revise

Lets go

it is correct and you know it m8

Antibody is responsible for neutralising and destroying antigens.
Antibody consist a four polypeptide chain, which is held by disulphide bridges.
Antibody also has a constant region which allows it bind onto the plasma membrane of phagocytes such as a macrophage
Antibody also have a variable region, which is complementary to a specific antigen, which is determined by the amino acid sequence.
Antibodies also have a hinge region, which allows flexibility, and causes the antibody to bind on one or more antigen, this is known agglutination and aids in photolysis
Antibodies can also neutralise toxins
Antibodies also bind to onto the antigens of a pathogen, and thus prevents pathogens from entering a host cell.

6/6 good!

my turn

Describe the structure of starch (4)

starch is made up of alpha glucose subunits.

Consists of a mixture of straight chain amylose and branched amylopectin.

in Amylopectin there are 1,4 glycosidic and some 1,6 glycosdic bonds while amylose only contains 1,4 glycosidic bonds.


starch contains C H O only

compact so makes it an excellent storage molecule

forms starch grains

Excellent, correct however i must go!!!

The elastic fibres in their alveoli have become damaged and therefore they cannot recoil as effectively, leading to less exhalation.

Could anyone share their notes on smoking related disease please? Really stuck on this :L


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