Metabolic pathways Flashcards
Non-competitive inhibitors affect enzyme action by..
altering the shape of the active site of the enzyme
metabolic pathways can be controlled by feedback inhibitions where
an end product binds to an enzyme found at the start of the pathway
describe how a non-competitive inhibitor works
bind away from the active site, preventing the substrate from binding
suggest how the results would confirm that the inhibitor was non-competitive
increasing the initial alcohol concentration will have no effect on the results
describe how a substitution mutation would alter the gene coding for enzyme 1
one nucleotide is replaced with another
explain how a substitution mutation may cause the synthesis of a faulty enzyme
the sequence of amino acids is changed
why PKU results in a build-up of phenylalanine
phenylalanine cannot be broken down
why individuals with PKU can still produce melanin
they get tyrosine from their diet
state the term used to describe this type of diagnostic testing
post- natal screening
describe how brain damage can be prevented in babies diagnosed with PKU
low phenylalanine diet
digest why alkali was not added to each tube at the start of the investigation
to allow time for the reaction to take place
state the term which describes a metabolic pathway in which simple molecules are built up into complex molecules
anabolic
