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 20RQ
Many of the negative regulator proteins of the cell cycle were discovered in what type of cells?
- gametes
- cells in G0
- cancer cells
- stem cells
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The absence of p53 ____ the cell cycle. The absence of retinoblastoma ____ the cell cycle.
Select one:
a.
promotes, promotes
b.
inhibits, promotes
c.
promotes, inhibits
d.
inhibits, inhibits
Which of the following statements is true regarding cell cycle regulators?
a. Cyclins determine which proteins each Cdks will act on.
b. Cdks check the DNA for damage and repairs it.
c. Cyclin binding to Cdks will result to Cdk inactivation.
d. Cyclin levels remain constant through the cell cycle.
What is a role of cyclines in regulating the cell cycle? Describe the significance of checkpoints monitoring proteins check for aberrant cell cycle events.
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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Chromosomes are duplicated during what portion of the cell cycle? a. G 1 phase b. S phase c. prophase d. prometaphasearrow_forwardIn the cell cycle, at which stages do two chromatids make up one chromosome? a. beginning of mitosis b. end of G1 c. beginning of S d. end of mitosis e. beginning of G2arrow_forwardA gene that codes for a positive cell cycle regulator is called a(n) _______. a. kinase inhibitor b. tumor suppressor gene c. proto-oncogene d. oncogenearrow_forward
- Neurons are arrested in ________ of the cell cycle. a. G1 b. anaphase c. prophase d. S phasearrow_forwardA tumor suppressor protein, p21, inhibits Cdk1. The earliest effect p21 on the cell cycle would be to stop the cell cycle at: a. early G1. b. late G1. c. the S phase. d. G2. e. the mitotic prophase.arrow_forwardCell differentiation occurs through _______________, whereas morphogenesis involves _______________. (a) pattern formation; cell determination (b) cell division; cell expansion (c) cell expansion; pattern formation (d) cell determination; cell division (e) cell determination; pattern formationarrow_forward
- After mitosis, each daughter cell contains genetic instructions that are ______ and _____ chromosome number of the parent cell. a. identical to the parent cells; the same b. identical to the parent cells; one-half the c. rearranged; the same d. rearranged; one-half thearrow_forwardSuppose you have a way of measuring the amount of DNA in a single cell during the cell cycle. You first measure the amount during the G1 phase. At what points during the remainder of the cycle would you predict changes in the amount of DNA per cell?arrow_forwardOscillations in the activity of which protein family propels the cell cycle forward and creates abrupt transitions between different cell cycle states? prophases kinetochores cyclin-dependent kinases microtubulesarrow_forward
- Which negative regulatory molecule can trigger cell suicide (apoptosis) if vital cell cycle events do not occur? a. p53 b. p21 c. retinoblastoma protein (Rb) d. cyclin-dependent kinase (Cdk)arrow_forwardDuring interphase of the cell cycle, the chromosomes (DNA mass) of a cell _________. decreases during S phase increases (doubles) during the S phase Increases during M phase decreases during G1arrow_forwardCell cycle regulation does NOT include: - Checkpoints are certain intervals -Proteins that survey the cell for errors -Verifying the cell is big enough to divide -Using enzymes to cut up DNA into chunks immediately before cell divisionarrow_forward
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