Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 12, Problem 12TYK
Summary Introduction
Introduction: Cancer is caused due to an abnormal cell cycle control system. It undergoes several genetic and epigenetic alterations that cause uncontrolled proliferation of cells.
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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.
Which of the following statements correctly describes a characteristic of tumor-suppressor gene?
a) they are frequently overexpressed in cancerous cells.
b) they are cancer-causing genes introduced into cells by viruses.
c) they encode proteins that help prevent uncontrolled cell growth.
d) they often encode proteins that stimulate the cell cycle.
What is the role of executioner proteins in apoptosis?a. They kill the cell by destroying its proteins.b. They function as the “death receptors” on the surface of the cell.c. They are part of the immune response that eliminates the cells.d. They cause the cell to swell and burst.
Chapter 12 Solutions
Study Guide for Campbell Biology
Ch. 12 - a. How many chromosomes are in your somatic cells?...Ch. 12 - a. What event is common to all three subphases of...Ch. 12 - The following diagrams will depict the five stages...Ch. 12 - a. What is MPF? b. Describe the relative...Ch. 12 - In the following photomicrograph of onion root tip...Ch. 12 - Describe one chromosome as it proceeds through an...Ch. 12 - Draw a sketch of one half of a mitotic spindle....Ch. 12 - FILL IN THE BLANK: Identify the appropriate phase...Ch. 12 - FILL IN THE BLANK: Identify the appropriate phase...Ch. 12 - Prob. 3TYKF
Ch. 12 - Prob. 4TYKFCh. 12 - Prob. 5TYKFCh. 12 - Prob. 6TYKFCh. 12 - FILL IN THE BLANK: Identify the appropriate phase...Ch. 12 - Prob. 8TYKFCh. 12 - Prob. 9TYKFCh. 12 - FILL IN THE BLANK: Identify the appropriate phase...Ch. 12 - One of the differences between prokaryotic binary...Ch. 12 - Prob. 2TYKCh. 12 - Prob. 3TYKCh. 12 - Prob. 4TYKCh. 12 - Prob. 5TYKCh. 12 - In eukaryotic organisms, chromosomes are...Ch. 12 - Prob. 7TYKCh. 12 - Prob. 8TYKCh. 12 - Prob. 9TYKCh. 12 - Prob. 10TYKCh. 12 - During cell division, cyclin combines with...Ch. 12 - Prob. 12TYKCh. 12 - Prob. 13TYKCh. 12 - Prob. 14TYKCh. 12 - Vinblastine is a chemotherapeutic drug used to...
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- Tumor Suppressor Genes are often called as gatekeepers because: a. They signify their involvement in governing the dynamics of cell proliferation b. They allow tumors to proliferate at an uncontrolled rate c. To allow a transport channel of suppressors d. They are not referred to as ?gatekeepers?arrow_forwardWhich of the following is NOT an example of fail-safe mechanisms that prevent the irregular cell divisions characteristic of cancer? a.Shortening of telomeres b.Cell division limit c.Mutation in a tumor suppressor gene d.Triggered cell deatharrow_forwardIn your own words, explain metastasis and why this process is important in the prognosis of a patient, and is this an easy and efficient process for cancer cells, why or why not?arrow_forward
- Some types of cancers are treated with surgery, chemotherapy, stem cell replacement or radiation, similar to ultraviolet light. Why might it be beneficial to irradiate cancer cells? Choose the Best answer. A. it kills off all the cancer cells. B. it forces all cancer cells into G0 C. it will halt cell division and possibly be forced into apoptosis D. it could kill off the cancer cells, halt cell division or possibly force the cell into apoptosisarrow_forwardCancer cells may be more susceptible than normal cells to mitotic catastrophe in response to chemotherapeutic drugs because of which of the following (select all that apply)? A. They express unique receptors for those drugs on their surface B. They may be resistant to apoptosis C. Cancer cells have more efficient DNA repair mechanism than normal cells. D. Only cancer cells are actively dividing E. They may lack key G2/M checkpoint controlsarrow_forwardThe majority of the cells undergo selective activation of the DNA which would lead to cells developing specialized structures and specialized features, a process known as a. differentiation b. apoptosis c. cell division d. cytokinesisarrow_forward
- In order for certain cancers to propagate, they require a growth factor known as Vascular Endothelial Growth Factor (VEGF). What does VEGF signal the cell to do and how does this promote the propagation of cancer cells?arrow_forwardMitogens tend to ___________ Select one: a. suppress cell division b. promote cell division c. suppress protein synthesis d. promote protein degradation e. promote apoptosisarrow_forwardWhat type of cells were concluded to be corrupted which constitutes a cell line when conducting cancer-related research? a. Stem cells b. RBC's c. ACF d. NIH 3T3arrow_forward
- Discuss the behaviors of cancer cells that maydifferentiate their growth from that of normal cells.arrow_forwardWhat would be the likely result of a mutation of the bcl-2 gene on the level of apoptosis? a. No change b. A decrease in apoptosis c. An increase in apoptosis d. An initial decrease, followed by an increase in apoptosisarrow_forwardWith regard to cancer cells, which of the following statementsare true?A. Cancer cells are clonal, which means they are derived from asingle mutant cell.B. To become cancerous, cells usually accumulate multiplegenetic changes that eventually result in uncontrolledgrowth.C. Most cancers are caused by oncogenic viruses.D. Cancer cells have lost the ability to properly regulate celldivision.arrow_forward
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