Cells B Flashcards
(50 cards)
different types of enzymes
catalase
phosphorylase
pepsin pH 2
trypsin pH 9
amylase pH 7
colour change for benedicts solution if maltose is present instead of starch
blue to brick red
colour change for iodine if starch is present
red brown to blue black
synthesis reaction
small, simple molecules join together to make larger complex molecules
degradation
large complex molecules broken down into smaller simple molecules
enzymes are made of
proteins
control
all factors being kept the same except one to allow us to compare with the results and proves any differences must be he to the changed factor
only changed by one variable=
valid
repeat =
reliable
enzymes are ??? and are made in ???
biological catalysts
cells
non living cells ______ catalase
do not contain
dependant variable
the one you measure
independent variable
the one you change
enzyme
a biological catalyst. speeds up the rate of reaction without getting used up
substrate
the chemical that the enzyme acts upon
product
the chemical produced by the enzyme reaction
starch is made of
glucose
protein is made of
amino acids
active site is designed to
match or complement the substrate
active site
the region on an enzyme where the substrate combined to be acted upon
specific
each enzyme has a unique shape which allows it to act on only one type of substrate (complementary)
optimum temperature
the temperature at which the enzyme works best
denatured
the active site is permanently damaged and changed in shape as a result of high temperatures. the enzyme no longer works
why do enzymes not work at low temperatures
there is not enough energy for the reaction to take place
