Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 10, Problem 17RQ
What is the main prerequisite for clearance at the G2 checkpoint?
- cell has reached a sufficient size
- an adequate stockpile of
nucleotides - accurate and complete
DNA replication - proper attachment of mitotic spindle fibers to kinetochores
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Which of the following is NOT a checkpoint that controls the progression of cell cycle?
The metaphase checkpoint determines if all chromosomes are attached to the spindle apparatus
Cytokinesis involves the formation of cleavage furrow to separate the cells
The G2 checkpoint checks for DNA damage and determines if all of the DNA is replicated
Cyclins and cyclin dependent kinases are protejns that are responsible for advancing a cell through the phases of the cell cycle
Which important phenomenon is both inspected during g1 and g2 checkpoints of the cell cycle?
ODNA damage
cell size
growth factors
Owhether DNA is replicated properly
All of the following happen during anaphase EXCEPT
doubled chromosomes (sister chromatids) are dragged to either end of the cell
motor proteins pull chromosomes
doubled chromosomes split into their individual single chromosomes
the centrosomes form
Chapter 10 Solutions
Biology 2e
Ch. 10 - Figure 10.6 Which of the following is the correct...Ch. 10 - Figure 10.13 Rb and other proteins that negatively...Ch. 10 - Figure 10.14 Human papillomavirus can cause...Ch. 10 - A diploid cell has ________ the number of...Ch. 10 - An organism s traits are determined by the...Ch. 10 - The first level of DNA organization in a...Ch. 10 - Identical copies of chromatin held together by...Ch. 10 - S. Chromosomes are duplicated during what stage of...Ch. 10 - Which of the following events does not occur...Ch. 10 - The mitotic spindles arise from which cell...
Ch. 10 - Attachment of the mitotic spindle fibers to the...Ch. 10 - Unpacking of chromosomes and the formation of a...Ch. 10 - Separation of the sister chromatids is a...Ch. 10 - The chromosomes become visible under a light...Ch. 10 - The fusing of Golgi vesicles at the metaplhase...Ch. 10 - At which of the cell-cycle checkpoints do external...Ch. 10 - What is the main prerequisite for clearance at the...Ch. 10 - If the M checkpoint is not cleared, what stage of...Ch. 10 - Which protein is a positive regulator that...Ch. 10 - Many of the negative regulator proteins of the...Ch. 10 - Which negative regulatory molecule can trigger...Ch. 10 - are changes to the order of nucleotides in a...Ch. 10 - A gene that codes for a positive cell-cycle...Ch. 10 - A mutated gene that codes for an altered version...Ch. 10 - Which molecule is a Cdk inhibitor that is...Ch. 10 - Which eukaryotic cell-cycle event is missing in...Ch. 10 - FtsZ proteins direct the formation of a...Ch. 10 - Compare and contrast a human somatic cell to a...Ch. 10 - What is the relationship between a genome,...Ch. 10 - Eukaryotic chromosomes are thousands of times...Ch. 10 - Briefly describe the events that occur in each...Ch. 10 - Chemotherapy drugs such as vincristine (derived...Ch. 10 - Describe the similarities and differences between...Ch. 10 - List some reasons why a cell that has just...Ch. 10 - What cell-cycle events will be affected in a cell...Ch. 10 - Describe the general conditions that must be met...Ch. 10 - Compare and contrast the roles of the positive...Ch. 10 - What steps are necessary for Cdk to become fully...Ch. 10 - Rb is a negative regulator that blocks the cell...Ch. 10 - Outline the steps that lead to a cell becoming...Ch. 10 - Explain the difference between a proto-oncogene...Ch. 10 - List the regulatory mechanisms that might be lost...Ch. 10 - ______ can trigger apoptosis if certain cell-cycle...Ch. 10 - Name the common components of eukaryotic cell...Ch. 10 - Describe how the duplicated bacterial chromosomes...
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- What is necessary for a cell to pass the G2 checkpoint? a. cell has reached a sufficient size b. an adequate stockpile of nucleotides c. accurate and complete DNA replication d. proper attachment of mitotic spindle fibers to kinetochoresarrow_forwardThe mitotic spindles arise from which cell structure? centromere centroscme kinetochore cleavage furrowarrow_forwardWhich of the following is NOT correct answer about telophase of mitosis: The mitotic spindle is formed in this phase Two new nuclei form, and two sets of chromosomes Nuclear membrane and nucleoid reappear in this phase The enzyme aminoacyl TRNA synthetase charges the TRNA molecules with the correct amino acids FRNA molecules with the correct amino acids MRNA molecules with the correct amino acidsarrow_forward
- Chromosomal DNA is duplicated during the phase of the cell cycle. G1 G2 Mitoticarrow_forwardMatch these cell division phases with the appropriate processes Break down of the nuclear membrane [ Choose ] allowing mitotic spindles to connect to [Choose ] Telophase Metaphase Anaphase Prometaphase Cytokinesis Interphase kinetochores APC degrades securin which allows separase to become active which degrades the cohesin rings Dephosphorylation of nuclear pore and lamins cleavage of plasma membrane by actin and myosin contractile ring [ Choose ] copying of the genome [ Choose ] formation of the metaphase plate [Choose ]arrow_forwardA particular cell has half as much DNA as some other cells in a mitotically active tissue. The cell in question is most likely in prophase G1 metaphase G2arrow_forward
- Which of the following events does not usually occur during interphase? (there may be more than one answer) DNA is replicated the spindles attach to the kinetochore centrosomes are duplicated cells grow in size the contractile ring formsarrow_forwardWhich event may take place before metaphase? separation of sister chromatids ODNA replication O reformation of nuclear membrane cytokinesisarrow_forwardThe checkpoint permits cell entry into mitosis only if all DNA is replicated.* Start APC/C G2/M G1/S A hydrogen atom is sometimes referred to as a proton because O It is positively charged It is negatively charged It has just one proton It has just one electron How many chromosomes are in a human sex cell right after meiosis I? * O 46 O 23 92 4 Which protein family is responsible for facilitating the process of programmed cell death that is activated in cells with significant DNA damage? * O Separase OCaspase Cdk-cyclin OShugoshin O O O O O O O Oarrow_forward
- Which of the following events does not normally occur in mitosis? Separation of sister chromatids from each other Formation of synaptonemal complexes Attachment of spindle fibers to centromeres Movement of sister chromatids to opposite poles Alignment of chromosomes along the metaphase platearrow_forwardA cell in G1 of interphase has 8 chromosomes. How many chromosomes, and how many DNA molecules will be found per cell as this cell progresses through the following stages: G2, metaphase, anaphase, and after cytokinesis?arrow_forwardIf cells pass the G2 checkpoint what happens to them? They begin G1 O They begin mitosis They begin S phase O They go into GO QUESTION 4 During the late mitotic checkpoint what does the cell monitor? O DNA damage Presence of growth factors Proper separation of chromosomes Successful duplication of chromosomes O'Carrow_forward
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