Gen Combo Ll Biology; Connect W/learnsmart Labs Access Card
4th Edition
ISBN: 9781259853197
Author: Robert Brooker
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 9, Problem 9TY
Summary Introduction
Introduction: Cells respond to the changing environment such as light, water, nutrient that causes some changes in cell, which helps in adapting to the new environment. Cells; can also generate signal to stop their own life processes, which results into the programmed cell death.
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Which of these is a characteristic of cancer cells?
a. They do not exhibit contact inhibition.
b. They lack specialization.
c. They have abnormal chromosomes.
d. They fail to undergo apoptosis.
e. All of these are correct.
Assuming that apoptosis fails and the cell continues through several cell cycles... what would the repercussions of this be?
A. a tumor (possibly malignant) may develop- result of cells actively dividing when they are not supposed to
B. organ failure
C. too many cells would be in G0 and not carrying out daily functions
D. too many mutated cells would be in the body and the body would shut down
Which of the following is the primary method by which cyclin proteins are regulated to influence entry into the cell cycle or transition from one stage to the next?
A.
Transcriptional upregulation and translation followed by targeted ubiquitin-mediated degradation by a proteasome.
B.
Phosphorylation to regulate the activity of the kinase site.
C.
An activating phosphorylation and an inactivating phosphorylation.
D.
All of these are mechanisms that can be used to regulate cyclins.
Chapter 9 Solutions
Gen Combo Ll Biology; Connect W/learnsmart Labs Access Card
Ch. 9.1 - Figure 9.1 Response of a yeast cell to glucose....Ch. 9.1 - Prob. 1BCCh. 9.1 - Which type of signal, paracrine or endocrine, is...Ch. 9.1 - Prob. 3CCCh. 9.2 - Prob. 1BCCh. 9.2 - Prob. 1CCCh. 9.2 - Prob. 2CCCh. 9.3 - Prob. 1BCCh. 9.3 - Prob. 1CCCh. 9.3 - Prob. 2CC
Ch. 9.3 - In the case of signaling pathways involving...Ch. 9.5 - Prob. 1EQCh. 9.5 - Prob. 2EQCh. 9.5 - Prob. 3EQCh. 9.5 - Prob. 1CCCh. 9 - Prob. 1TYCh. 9 - Prob. 2TYCh. 9 - Prob. 3TYCh. 9 - Prob. 4TYCh. 9 - Prob. 5TYCh. 9 - The relay protein Ras is part of the EGF pathway...Ch. 9 - Prob. 7TYCh. 9 - Prob. 8TYCh. 9 - Prob. 9TYCh. 9 - Prob. 10TYCh. 9 - Prob. 1CQCh. 9 - Conceptual Questions What are the three stages of...Ch. 9 - Prob. 3CQCh. 9 - Prob. 1COQCh. 9 - Prob. 2COQ
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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
- Focal adhesions ________. a. have been implicated in cell locomotion b. contain integrins that develop transient interactions with the extracellular matrix c. collect information about the chemical properties of the extracellular environment d. transmit information to the cell interior that may lead to changes in cell adhesion, proliferation or survival e. All of these are correct.arrow_forwardWhich of the following is associated with a decrease in cell-cell interactions? Select one: a. loss of MMPs b. loss of basement membrane proteins c. increased integrin expression d. Loss of integrins e. loss of E-cadherinarrow_forwardNormal (nonmutant) tumor-suppressor genes often functiona. as negative regulators of cell division.b. in the maintenance of genome integrity.c. in the stimulation of cell division.d. as both a and b.arrow_forward
- Identify which of the following statements is a lie? Select one: a. Apoptosis occurs as the body produces certain enzymes that initiate degradation of nuclear and cytoplasmic material, breaking the cell into necrosis bodies. b. Apoptosis helps maintain a healthy and normal population of cells. c. Apoptosis plays an essential role in growth, immune surveillance, and embryological development.arrow_forwardA tumor suppressor gene regulates the cell cycle; an example is . Select one: a. positively, p21 b. negatively, cyclin c. positively, retinoblastoma d. negatively, retinoblastoma e. positively, RAS Cycle HW due Jump to. 4) Next pa cancer stem cellsarrow_forwardWhich of the following statements about potency is correct? O A. Committed progenitors have more potency than totipotent stem cells. B. Multipotent stem cells have higher potency than pluripotent stem cells. C. Unipotent stem cells are different from normal somatic cells because they can self-renew. D. Adult tissues have many totipotent stem cells in their niche.arrow_forward
- A tumor suppressor gene ___regulates the cell cycle; an example is _____. Select one: a. negatively, cyclin b. positively, retinoblastoma c. positively, p21 d. negatively, retinoblastoma e. positively, RASarrow_forwardAn agent that allows a cell to respond to changes in its environment istermeda. a cell surface receptor.b. an intracellular receptor.c. a structural protein.d. a signal.e. apoptosis.arrow_forwardWhich of the following is not a part of apoptosis?a. cell shrinkageb. DNA fragmentationc. the manufacture of cellsd. activation of cellular enzymesarrow_forward
- An active S-cdk (a type of CDK) will most likely _________ a. degrade cyclin b. promote apoptosis c. prevent the cell cycle d. promote the cell cycle e. prevent apoptosisarrow_forwardWhich 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.arrow_forwardA scientist notices that a cancer cell line fails to die when he adds an inducer of apoptosis to his culture of cells. Which hypothesis could explain why the cells fail to die? a. The cells have a mutation that prevents the initiation of apoptosis signaling. b. The cells have lost expression of the receptor for the apoptosis-inducing ligand. c. The cells overexpress a growth factor pathway that inhibits apoptosis. d. All of the above.arrow_forward
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