BMS 300 Exam 1 corrections UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Integrins are transmembrane proteins that can bind to molecules called catenins which are
cytoplasmic proteins and to laminins, which are extracellular protein. You would expect to find
these transmembrane proteins in:
a. desmosomes in epithelial cells
b. hemidesmosomes in epithelial cells
c. communicating junctions in connective tissue
d. occluding junctions in epithelia
e. a and b are correct - CORRECT ANSWER - b. hemidesmosomes in epithelial cells
A consensus sequence of bases that commonly includes TATA is:
a. at the 3' end of a gene
b. where DNA polymerase binds to initiate replication
c. where helicase binds to begin untwisting the DNA helix
d. where transcription factors bind to DNA to initiate gene transcription
e. a and d are correct - CORRECT ANSWER - e. a and d are correct
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 transmembrane segments of the protein to be composed
entirely of:
a. amphipathic phosphate head groups
b. alpha helices
, c. beta-sheets
d. phospholipids
e. hydrophilic R groups - CORRECT ANSWER - b. alpha helices
Kinesin, dynein, and myosin are all:
a. plus end directed motors
b. tubulin binding proteins
c. actin binding proteins
d. ATPases
e. a and d are correct - CORRECT ANSWER - d. ATPases
Epithelial tissue is composed mostly of:
a. fibrocytes
b. extracellular proteins that have been secreted by widely dispersed cells.
c. chondrocytes
d. cells oriented on a basal lamina
e. all except a are correct - CORRECT ANSWER - d. cells oriented on a basal lamina
an experiment is performed in which the sequence of bases coding for the signal peptide is added
to an mRNA molecule that codes for kinesin. When this mRNA is translated, the resulting
protein would be expected to be found:
a. secreted into the extracellular space
b. in Golgi aparatus
c. in the endoplasmic reticulum
d. in the cytoplasm
e. all except d are true - CORRECT ANSWER - e. all except d are true
ACTUAL Exam Questions and CORRECT
Answers
Integrins are transmembrane proteins that can bind to molecules called catenins which are
cytoplasmic proteins and to laminins, which are extracellular protein. You would expect to find
these transmembrane proteins in:
a. desmosomes in epithelial cells
b. hemidesmosomes in epithelial cells
c. communicating junctions in connective tissue
d. occluding junctions in epithelia
e. a and b are correct - CORRECT ANSWER - b. hemidesmosomes in epithelial cells
A consensus sequence of bases that commonly includes TATA is:
a. at the 3' end of a gene
b. where DNA polymerase binds to initiate replication
c. where helicase binds to begin untwisting the DNA helix
d. where transcription factors bind to DNA to initiate gene transcription
e. a and d are correct - CORRECT ANSWER - e. a and d are correct
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 transmembrane segments of the protein to be composed
entirely of:
a. amphipathic phosphate head groups
b. alpha helices
, c. beta-sheets
d. phospholipids
e. hydrophilic R groups - CORRECT ANSWER - b. alpha helices
Kinesin, dynein, and myosin are all:
a. plus end directed motors
b. tubulin binding proteins
c. actin binding proteins
d. ATPases
e. a and d are correct - CORRECT ANSWER - d. ATPases
Epithelial tissue is composed mostly of:
a. fibrocytes
b. extracellular proteins that have been secreted by widely dispersed cells.
c. chondrocytes
d. cells oriented on a basal lamina
e. all except a are correct - CORRECT ANSWER - d. cells oriented on a basal lamina
an experiment is performed in which the sequence of bases coding for the signal peptide is added
to an mRNA molecule that codes for kinesin. When this mRNA is translated, the resulting
protein would be expected to be found:
a. secreted into the extracellular space
b. in Golgi aparatus
c. in the endoplasmic reticulum
d. in the cytoplasm
e. all except d are true - CORRECT ANSWER - e. all except d are true
