BMS 300 PAST EXAM QUESTIONS
AND VERIFIED ANSWERS
The nucleic acid synthesizing enzymes that catalyze the formation of
phosphodiester bonds to form nucleic acids work in the
ribosomes
The first steps of glycosylation involve the covalent attachment of sugars to a
nitrogen atom in the r-groups of the amino acid asparagine, you would expect
this process to occur in the
cytoplasm
You would expect DNA in the mitochondria to be
surrounded by a separate membrane bound compartment
Between the time when pre mRmembrane-boundNA is made and when introns
are spliced out of it, a form of RNA called snoRNA transfers a methyl group to
some bases in the pre mRNA. From what you know about RNA processing you
would expect these enzymes to function in the cytoplasm
An experiment is done in which the sequence of bases coding for the signal
peptide are added to an mRNA molecule that codes for kinesin. When this
mRNA is translated, the resulting protein would be expected to be found
in the cytoplasm
Epithelial tissue is primarily made up of
- extracellular proteins that have been secreted by widely dispersed cells
- chondrocytes
- cells oriented on a basal lamina
Kinesin, dynein, and myosin are all
actin binding proteins
,Connexons are clustered at gap junctions where they provide cytoplasmic
continuity between adjacent cells, each connexon contains six connexins; each
connexin crosses the membrane four times. You would expect each of the
transmembrnae segments of the protein to be comnposed entirely of
phospholipids
A consensus sequence of bases that commonly includes TATA is
where transcription factors bind to DNA to initiate gene transcription
Integrins are transmembrane proteins that can bind molecules called catenins
which are cytoplasmic proteins and to laminins, which are extracellular
proteins. You would expect to find these transmembrane proteins in
desmosomes in epithelial cells
From the list below, choose the one that is not directly dependent on hydrogen
bonding
base pairing in DNA
Pol 3 is a type of enzyme that synthesizes tRNA, you would expect this enzyme
to form
covalent bonds between a tRNA molecule and an amino acid
Which of the following requires the formation of covalent bonds?
binding purines to pyrimidines to form the three dimensional shape of RNA
Which of the following would you expect to have no glycosylated amino acids
fibronectin in the basal lamina
RNA can assure a three dimensional shape because of
hydrogen bonding between bases in the RNA molecule
Hydrogen bonding between the carbonyl oxygen of one amino acid and the
hydrogen on the amine of a nearby amino acid organized in the i+4 arrangement
describes the ________ structure of a protein - secondary
Recently the remains of Richard 3 king of England were identified by his
mitochondrial DNA, which appears in less than 1% of the english population,
, which of the following would you expect not to share Richards mitochondrial
DNA?
a. The Baroness of Ros, daughter of the Duchess of Exeter
In 1483 his brother Richard 3 and his two nephews, Gilbert and Edward V, ages
9 and 12 respectivly arrested and confined to the tower of london. They were
never agin seen alive outside the tower, and were presumed murdered. In 1674
two small skeletons were found in a closet beneath a stairway and assumed to
be the remains of the two boys. Even though harry Potter couldn't be completly
ruled out, which of the following is consistent with the skeletons belonging to
Richard's nephews?
the growth plates has not closed so that the diaphysis and epiphysis of the long
bones were separate structures
Which of the following is synthesized on ribosomes free in the cytoplasm?
keratin
Epithelia generally form lining of tubes. The ___________ regions of
epithelium cells face the _________
- basilar, basal lamina
- apical, lumen
In patients with Addisons Disease where cortisol levels are low because
secretory cells in the adrenal cortex release little cortisol, you would expect
levels of corticotropin releasing hormone (CRH) and the stimulating hormone,
Adrenocorticotropic hormone (ACTH) to be _____________ and _______
respectively
high, high
Amino acids destined to be incorporated into protein arrive in the ribosomes
covalently linked to
exons of mRNA
Melanocytes secrete melanin that is taken up by ___________ to protect
dividing cells in the ____________ from damage by UV light
collagen, dermis
AND VERIFIED ANSWERS
The nucleic acid synthesizing enzymes that catalyze the formation of
phosphodiester bonds to form nucleic acids work in the
ribosomes
The first steps of glycosylation involve the covalent attachment of sugars to a
nitrogen atom in the r-groups of the amino acid asparagine, you would expect
this process to occur in the
cytoplasm
You would expect DNA in the mitochondria to be
surrounded by a separate membrane bound compartment
Between the time when pre mRmembrane-boundNA is made and when introns
are spliced out of it, a form of RNA called snoRNA transfers a methyl group to
some bases in the pre mRNA. From what you know about RNA processing you
would expect these enzymes to function in the cytoplasm
An experiment is done in which the sequence of bases coding for the signal
peptide are added to an mRNA molecule that codes for kinesin. When this
mRNA is translated, the resulting protein would be expected to be found
in the cytoplasm
Epithelial tissue is primarily made up of
- extracellular proteins that have been secreted by widely dispersed cells
- chondrocytes
- cells oriented on a basal lamina
Kinesin, dynein, and myosin are all
actin binding proteins
,Connexons are clustered at gap junctions where they provide cytoplasmic
continuity between adjacent cells, each connexon contains six connexins; each
connexin crosses the membrane four times. You would expect each of the
transmembrnae segments of the protein to be comnposed entirely of
phospholipids
A consensus sequence of bases that commonly includes TATA is
where transcription factors bind to DNA to initiate gene transcription
Integrins are transmembrane proteins that can bind molecules called catenins
which are cytoplasmic proteins and to laminins, which are extracellular
proteins. You would expect to find these transmembrane proteins in
desmosomes in epithelial cells
From the list below, choose the one that is not directly dependent on hydrogen
bonding
base pairing in DNA
Pol 3 is a type of enzyme that synthesizes tRNA, you would expect this enzyme
to form
covalent bonds between a tRNA molecule and an amino acid
Which of the following requires the formation of covalent bonds?
binding purines to pyrimidines to form the three dimensional shape of RNA
Which of the following would you expect to have no glycosylated amino acids
fibronectin in the basal lamina
RNA can assure a three dimensional shape because of
hydrogen bonding between bases in the RNA molecule
Hydrogen bonding between the carbonyl oxygen of one amino acid and the
hydrogen on the amine of a nearby amino acid organized in the i+4 arrangement
describes the ________ structure of a protein - secondary
Recently the remains of Richard 3 king of England were identified by his
mitochondrial DNA, which appears in less than 1% of the english population,
, which of the following would you expect not to share Richards mitochondrial
DNA?
a. The Baroness of Ros, daughter of the Duchess of Exeter
In 1483 his brother Richard 3 and his two nephews, Gilbert and Edward V, ages
9 and 12 respectivly arrested and confined to the tower of london. They were
never agin seen alive outside the tower, and were presumed murdered. In 1674
two small skeletons were found in a closet beneath a stairway and assumed to
be the remains of the two boys. Even though harry Potter couldn't be completly
ruled out, which of the following is consistent with the skeletons belonging to
Richard's nephews?
the growth plates has not closed so that the diaphysis and epiphysis of the long
bones were separate structures
Which of the following is synthesized on ribosomes free in the cytoplasm?
keratin
Epithelia generally form lining of tubes. The ___________ regions of
epithelium cells face the _________
- basilar, basal lamina
- apical, lumen
In patients with Addisons Disease where cortisol levels are low because
secretory cells in the adrenal cortex release little cortisol, you would expect
levels of corticotropin releasing hormone (CRH) and the stimulating hormone,
Adrenocorticotropic hormone (ACTH) to be _____________ and _______
respectively
high, high
Amino acids destined to be incorporated into protein arrive in the ribosomes
covalently linked to
exons of mRNA
Melanocytes secrete melanin that is taken up by ___________ to protect
dividing cells in the ____________ from damage by UV light
collagen, dermis
