BSCI330 Final Exam (Questions & Answers) Rated 100% Correct!!
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Course
BSCI330 F
Institution
BSCI330 F
Which of the following statements about the cell cycle is/are TRUE?
A: The cyclin proteins are expressed only during specific times of the cell cycle.
B: The cyclin-dependent kinases are expressed throughout the cell cycle, but only
active during specific times.
C: The cell cycle can be regulat...
BSCI330 Final Exam
Which of the following statements about the cell cycle is/are TRUE?
A: The cyclin proteins are expressed only during specific times of the cell cycle.
B: The cyclin-dependent kinases are expressed throughout the cell cycle, but only
active during specific times.
C: The cell cycle can be regulated by both environmental stimuli and intracellular
conditions.
D: The cell cycle has multiple checkpoints.
E: All of the above. - ✔️✔️E: All of the above
Oxidative metabolism of glucose includes both substrate-level phosphorylation and
oxidative phosphorylation. Which of the following is a property of oxidative
phosphorylation, but NOT substrate-level phosphorylation?
A: ATP synthesis is coupled to a highly exergonic reaction.
B: ATP synthesis is generated by transfer of a phosphate from another organic
molecule to ADP
C: The energy for ATP synthesis is derived from redox reactions
D: ATP is generated by directly attaching inorganic phosphate to ADP. - ✔️✔️C: The
energy for ATP synthesis is derived from redox reactions.
Which of the following lipids would be found mostly on the extracellular leaflet of a
typical (non-apoptotic) eukaryotic cell's plasma membrane?
A: Phosphatidylcholine
B: Phosphatidylinositol
C: Phosphatidylserine
D: All of the above - ✔️✔️A: Phosphatidylcholine
Which of the following modificiations does NOT occur in the Golgi apparatus?
A: Addition of O-linked carbohydrates
B: Addition of a mannose-6-phosphate ring
C: Ubiquitylation of lysines
D: Proteolytic trimming - ✔️✔️C: Ubiquitylation of lysines
Which of the following could allow an otherwise non-spontaneous reaction to take place
in a cell?
A: Decreasing reactant concentration
B: Increasing product concentration
C: Coupling the reaction to the hydrolysis of ATP
, D: Having an enzyme catalyze the reaction - ✔️✔️C: Coupling the reaction to the
hydrolysis of ATP
Many gene regulatory proteins or transcription factors act as dimers. Which of the
following is NOT a direct result of this?
A: Sequence recognition can occur on two adjacent major grooves.
B: The recognized sequences are typically palindromes.
C: Transcription factors can be regulated by cellular localization.
D: The length of sequence recognized on genomic DNA can be doubled - ✔️✔️C:
Transcription factors can be regulated by cellular localization.
Which of the following would allow you to visualize the internal structure of a
mitochondrion with the highest level of resolution?
A: Visible light microscopy
B: Confocal fluorescence microscopy
C: Transmission electron microscopy
D: Scanning electron microscopy - ✔️✔️C: Transmission electron microscopy
Which of the following is NOT an advantage of metabolic cycles?
A: Multiple entry points for alternative metabolic substrates
B: Productions of intermediate metabolites that can be used by the cell for other
purposes.
C: More energy can be extracted than from linear pathways
D: Presence of multiple regulatory points - ✔️✔️C: More energy can be extracted than
from linear pathways
Cadherins are an important class of molecules that helps cells stick together. Which is
NOT true about them?
A: They bind via homotypic interactions
B: They are transmembrane proteins that cross the plasma membrane
C: They require calcium to bind
D: They are secreted proteins - ✔️✔️D: They are secreted proteins
When two cells are connected together by gap junctions, which of the following is not
true?
A: Large proteins and RNA can cross from one cell to another
B: Small charged cations like calcium can move from one cell to another
C: The sizes of the pores can change in response to signals.
D: There is a 2-4 nm gap between the cells at the gap junction. - ✔️✔️A: Large
proteins and RNA can cross from one cell to another.
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