While testing amylase activity, john uses a buffer of ph 6 and substrate starch. he incubates them at 104ºf (40ºc). all the tubes show glucose formation, except one, which had no starch solution. why did this happen?

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation:

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation:

a time line cause it goes from 685 to 978

what's the