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75 Cards in this Set

  • Front
  • Back
Elements are basic forms of
matter
smallest units in elements are
atoms
atomic mass number may vary for
isotopes
atomic number is constant for each
elements
chemical bonds form and break in
chemical reactions
examples of diasacharides 3
sucrose
maltose
lactose
examples of polysaccharides 3
cellulose
glycogen
starch
examples of monomers 3
glucose
fructose
galactose
amino acids are compounds with
amino group
carboxyl group
and r group
wht's different with each amino acid?
the R-group
the R -group can be __/__ and ___/___
polar/nonpolar
acidic/basic
glucose and fructose forms..
sucrose
glucose and glucose forms..
maltose
3 glucose forms..
starch
what must be removed from the glucose model molecules in order to have them easily fit together?
water molecules
benedict's color indicates color change when.. is present
monosaccharide
iodine color indicates color change when.. is present
polysaccharide
benedict's color change is from... to ...
blue to orange/yellow
iodine color change is from ... to ...
rust/amber to blackish
honey is a mono, dia or poly?
mono
oats is a mono, dia or poly?
poly
table sugar is a mono, dia or poly?
dia
apple is a mono, dia or poly?
mono
powdered sugar is a mono, dia or poly?
dia
example of food that is polysaccharides?
oats, pasta, rice, bread, anything with grains, etc in it.
do carbohydrates have a carboxyl group?
no
do carbohydrates have amino groups?
no
carboxyl group have a special arrange ment of..
carbon, oxy, hydrogen
amino gropus have a special arrangement of..
nitrogen and hydrogen
what determines the kinds of proteins?
order, number, kinds, arrangement in space of amino acids joined
what are ther two special end groups in an amino acid?
carboxyl group
amino group
substances tested that were protein 2
albumin and gelatin
subatnces tested that weren't protein
starch and sucrose
what turns skin yellow and why?
nitric acid, because it reacts with the protein in the skin
what elements are present in glycerol?
are they also present in fatty acids?
hydrogen, oxygen, carbon
yes
there are always __ oxygen atoms present in fatty acids
2
is carboxyl group presnet in fatty acids? in glycerol?
yes, no
a fat molecule contains _ ___ and _ ____
1 glycerol and 3 fatty acids
glycerol + fatty acid molecules ---> ___ + _____
fat + water molecules
what molecule remains unchanged in all fats?
glycerol
fats are soluble in ____ fluid
lighter
what is the result when fats...
mixed with lighter fluid?
mixed with cold water?
fats rubbed on brown paper
water rubbed on brown paper
dissolves
won't dissolve
translucent
non translucent
what is present in every of the component group? (carbo. lipid, etc)
carbon, hydrogen, oxygen
is there double the amount of hydrogen as oxygen in..
glycerol?
fatty acids?
amino acids?
no
yes
no
why won't grease on clothing come out with cold water?
because water is polar and lipid isn't.
amino acids are linked by
peptide bonds
biuret color changes from.. to ....
blue to purple
what is biuret tested positive for?
proteins
sudan is polar or nonpolar?
polar
sudan color change from ... to ....
orange to dark orange layer at the top
sudan is tested postiive for..
lipid
what color when sudan is negative?
light orange throughout
brown paper bag tests positive for..
lipid
brown paper bag color changes from.. to ...
brown to translucent
.. is the main source of energy for living things
carbohydrates
... help carry out chemical reactions
proteins
... is important parts of biological membranes
lipids
... transport substances in and out of cells
proteins
difference between ___ energy and the energy of the ___ is the ___ ____
required, reactants, activation energy
peak of each reaction graphs represnets the ....
energy needed for the reaction to go forward
surface tension
water molecules are held together forming weak hydrogen bonds so the water surface is almost like a membrane
evaporative coolant
when we sweat, and the sweat evaporates, it takes away the heat.
dogs pant
and rabbits uses their ears
imbibition
porous substances soak up water
excellent solvent
water's polarity.
what is water especially good at dissolving and why?
ionic- because they are polar
enzymes are very specific with catalyzing only _ reaction
1
reactants must collide with enough energy so existing bonds will be __ and new bonds will be formed
broken
enzymes can be affected by different variables:
pH values
and changes in temperature
what does a competitive inhibitor do?
mimics the substrate and competes for the active site
what does a noncompetitive inhibitor do?
binds to the enzyme at a location away from the active site, but alters the conformation of the enzyme so that the active site is no longer fully functional
catabolism
breaks things down
anabolism
builds things up
cata + ana = __
meta
in the enzyme lab, which two substance gelled and which two didnt?
canned + gelatin and gelatin
fresh + gelatin and meat tenderizer + gelatin
how could the canning process change bromelin?
the heat change the shape of the protein and it doesn't work right