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BS 161 EXAM 3 OBJECTIVE ASSESSMENT COMPREHENSIVE QUESTIONS AND CORRECT ANSWERS GRADE A+ 2024 UPDATE

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BS 161 EXAM 3 OBJECTIVE ASSESSMENT COMPREHENSIVE QUESTIONS AND CORRECT ANSWERS GRADE A+ 2024 UPDATE

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  • May 29, 2024
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BS 161 EXAM 3 OBJECTIVE ASSESSMENT
COMPREHENSIVE QUESTIONS AND CORRECT
ANSWERS GRADE A+ 2024 UPDATE




Which of the following is TRUE if a cell has a mutation in the p53 gene
such that the p53 protein is no longer able to be phosphorylated?
1) The kinase activity in the nucleus would decrease
2) the cell would arrest
3) the cell would proceed through the cell cycle even in the presence of
DNA damage
4) the amount of cytoplasmic p53 would increase - (correct answer)
The cell would proceed through the cell cycle even in the presence of
DNA damage


Kinase - (correct answer) an enzyme that catalyzes the transfer of a
phosphate group from ATP to a specified molecule.


CDK - (correct answer) cyclin dependent kinase


S phase - (correct answer) The synthesis phase of the cell cycle; the
portion of interphase during which DNA is replicated.

,M phase checkpoint - (correct answer) chromosomes have attached
to spindle apparatus, chromosomes have properly segregated and MPF
is absent


Cytokinesis - (correct answer) division of the cytoplasm to form two
separate daughter cells
Which major checkpoint delays the cell cycle when DNA replication is
incomplete?
1) G1 checkpoint
2) M checkpoint
3) G2 checkpoint G1, G2, and M checkpoints
4) G2 checkpoint - (correct answer) G2 checkpoint


CDKs are important in the regulation of the cell cycle. They carry out
their function by:
1) degrading cyclin proteins
2) adding phosphate groups to proteins
3) preventing the progression of one stage of the cell cycle to the next
4)removing phosphate - (correct answer) Adding phosphate groups
to proteins




G2 checkpoint - (correct answer) The cell checks to make sure the
DNA is copied correctly

, G1 checkpoint - (correct answer) checks for cell size, nutrients,
growth factors and DNA damage


cell cycle - (correct answer) series of events that cells go through as
they grow and divide


G protein - (correct answer) A GTP-binding protein that relays
signals from a plasma membrane signal receptor, known as a G protein-
coupled receptor, to other signal transduction proteins inside the cell.


Receptors - (correct answer) Special structures that allow living
organisms to sense the conditions of their internal or external
environment.


How do new cyclin proteins appear in the cytoplasm? - (correct
answer) They are made through protein synthesis.


Which of the following is capable of phosphorylating key proteins
involved in the regulation of the cell cycle?
1) CDK
2) p53 Protein
3) cyclin-CDK complex
4) cyclin

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