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ch 5

which is not a polymer
what is the chemical mechanism by which cells make polymers from monomers
dehydrations reactions
how many molecules of h20 are needed to completely hydrolyze a polymer that is 11 monomers long?
which if the following best summarizes the relationship between dehydration reactions and hydrolysis?
A & B
the molecular formular for glucose is C6H12O6. what would be the molecular formula for a molecule made by linking 3 glucose molecules together by dehydration reactions?
how is lactose classified
which of the following is true of both starch and cellulose?
both polymers of glucose
a molecule with the formula C18H36O2 is probably a
fatty acid
which of the following statements is false for lipids?
they are soluble in H2O
what is the structure in figure 5.4?
steroid molecule
why are human sex chromosomes considered to be lipids?
steroids, not soluble in H2O
the bonding if 2 amino acid molecules to form a larger molecule requires
the release of a H2O molecule
which of the following statements is true regarding the molecule illustrated in fig 5.2?
A & B
which of the following statements is true regarding the molecule illustrated in fig 5.3?
molecules of this type are usually liquid at room temp
the molecule in fig 5.3 is
unsaturated fatty acid
there are 20 amino acids. what makes 1 amino acid different from another?
different side chains attached to a alpha carbon
which of the following statements is/are true regarding the chemical reaction in fig 5.5?
A, B, C
Polysaccarides, lipids, and proteins are similar in that they
are synthesized from monomers by hydrolysis
a particular polypeptide was found to contain 100 amino acids. How many peptide bind are present in this protein?
which bonds are created during the formation of the primary structure of a protein?
peptide bonds
fig 5.7 best illustrates the
2nd structure of a polypeptide
the tertiary structure of a protein is the
unique 3-D shape of the fully folded polypeptide
what is the term used for a change in a proteins 3D shapevor conformation due to disruption of hydrogen bonds, disulfide bridges or ionic bonds?
the major purpose of RNA is to
function in protein synthesis
which of the following best describes the flow of info in eukaryotic cells?
DNA-> RNA-> proteins
which of the following descriptions best fits the class of molecules known as nucleotides?
a nitrogeous base, a phosphate group, and a pentose sugar
the difference between the sugar in DNA and the sugar in RNA is that the sugar in DNA
carbon's one less oxygen atoms
which of the following statements best summarizes the structural differences between DNA and RNA
DNA nucleotides contain different sugar than RNA nucleotides
these data suggest that the new organism
is more closely related to frogs than humans