AP Bio Quiz 5
altering which of the following levels of structural organization could change the function of a protein?
a)secondary b)quaternary c)primary d)tertiary ALL OF THE ABOVE
On food packages, to what does the term "insoluble fiber" refer?
cellulose
what is the term used for a protein molecule that assists in the proper folding of proteins?
chaperonin
which of the following are nitrogenous bases of the pyrimidine type?
cytosine and uracil
What is the chemical mechanism by which cells make polymers from monomers?
dehydration reactions
of the following functions, the major purpose of RNA is to
function in the synthesis of protein
which of the following are nitrogenous bases of the purine type
guanine and adenine
enzymes are
proteins
Which of the following is true of both starch and cellulose?
they are both polymers of glucose
the molecules shown in figure 5.3 is a *picture on #12 on quiz 5*
unsaturated fatty acids
How many molecules of water are needed to completely hydrolyze a polymer that is 11 monomers long?
10
if one strand of DNA molecule has a sequence of bases 5'ATTGCA3' the other complementary strand would have the sequence
3'TAACGT5'
if a DNA sample were composed of 10% thymine, what would be the percent of a guanine?
40%
The molecular formula for glucose is C6H12O6. What would be the molecular formula for a molecule made by linking 3 glucose molecules together by dehydration reactions?
C18H32O16
which of the following statements best summarizes the structural differences between DNA and RNA
DNA nucleotides contain a different sugar than RNA nucleotides
What is a trigylceride (aka triglyceride)
a lipid made with three fatty acids in glycerol
which of the following descriptions best fits the class of molecules known as nucleotides?
a nitrogenous base, phosphate group, and a pentose sugar
what is the structure shown in figure 5.4?
a steroid molecule
Polysaccharides, lipids, and proteins are similar in that they
are synthesized from monomers by dehydration reactions
Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule. How is lactose classified?
as a disaccharide
The function of each protein is a consequence of its specific shape, what is the term used for a change in a proteins three dimensional shape or conformation due to disruption of hydrogen bonds, disulfide bridges, or ionic bonds
denaturation
There are 20 different amino acids. What makes one amino acid different from one another?
different side chains (R groups) attached to an alpha carbon
a molecule with the formula C18H36O2 is probably a
fatty acid
Which of the following is not a polymer?
glucose
The enzyme amylase can break glycosidic linkages between glucose monomers only if the monomers are the alpha form
glycogen
Which of the following statements is/are true regarding the chemical reaction illustrated in figure 5.5?
it results in a peptide bond
which of the following statements is true regarding the molecule illustrated in figure 5.3
molecules of this type are usually lipid at room temperature
the element nitrogen is present in all of the following except
monosaccharides
which of the following statements is false for he calls of biological molecules known as lipids?
they are soluble in water
All of the following concerning saturated fats are true except
they have multiple double bonds in the carbon chains of their fatty acids
