BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 11, Problem 12SA
Summary Introduction
Introduction:
Ever organisms present in the environment contains cell. The cell is the basic “fundamental unit” of life. The cell contains three major regions. These are “plasma membrane, cytoplasm, and nucleus.” The nucleus contains the genetic material. The genetic material contains small structures called genes. These genes are very important as they carry hereditary information from parent to offspring.
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Cancer causing genes are called ________. a. transformation genes b. tumor suppressor genes c. oncogenes d. mutated genes
Sometimes, malignant cells do not stay properly anchored in tissues because of the loss of function of:
a.
cell walls
b.
oncogenes
c.
plasma membrane adhesion proteins
d.
nuclear membranes
e.
tumor suppressor genes
Most forms of cancer involvea. the activation of a single oncogene.b. the inactivation of a single tumor-suppressor gene.c. the activation of multiple oncogenes.d. the activation of multiple oncogenes and the inactivation ofmultiple tumor-suppressor genes.
Chapter 11 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 11 - Prob. 1SACh. 11 - A duplicated chromosome has ______ chromatids. a....Ch. 11 - Prob. 3SACh. 11 - Most cells spend the majority of their lives in...Ch. 11 - Prob. 5SACh. 11 - Prob. 6SACh. 11 - In intervals of interphase, G stands for ________...Ch. 11 - Prob. 8SACh. 11 - Prob. 9SACh. 11 - Prob. 10SA
Ch. 11 - Cytoplasm of a plant cell divides by the process...Ch. 11 - Prob. 12SACh. 11 - ________ are characteristic of cancer. a....Ch. 11 - Match each term with its best description. ___...Ch. 11 - Match each stage with the events listed. ___...Ch. 11 - When a cell reproduces by mitosis and cytoplasmic...Ch. 11 - How is the human life cycle related to the cell...Ch. 11 - The eukaryotic cell in the photo on the left is in...Ch. 11 - Exposures to radioisotopes or other sources of...Ch. 11 - Suppose you have a way to measure the amount of...
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- ________ are changes to the nucleotides in a segment of DNA that codes for a protein. a. Proto-oncogenes b. Tumor suppressor genes c. Gene mutations d. Negative regulatorsarrow_forwardA mutated gene that transforms a normal cell into a tumor cell is called a a. oncogene. b. neoplasm. c. carcinoma. d. checkpoint gene. e. proto-oncogene.arrow_forwardA tumor suppressor genea. inhibits cell division.b. opposes oncogenes.c. prevents cancer.d. is subject to mutations.e. All of these are correct.arrow_forward
- A cell is cancerous. You might find an abnormality ina. a proto-oncogene.b. a tumor suppressor gene.c. regulation of the cell cycle.d. tumor cells.e. All of these are correct.arrow_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_forwardThe normal function of the Rb protein is toa. act as a brake on cell division.b. produce retinoblastoma.c. facilitate retinal pigmentation.d. initiate DNA replication.arrow_forward
- Normal (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_forwardWhich of the following is typical of cancer cells? A. The parent cell of the tumor contains a single mutation in a single checkpoint gene. B. Malignant cells migrate. C. Cancer cells lose the ability to divide. D. Products of oncogenes inhibit mitosis E. Benign tumors invade normal tissue.arrow_forwardStargardt's disease was one of these that can be treated using embryonic stem cells. Why would scientist chose to use this type of stem cell in treatment of Stargard's? A. There ae not ethical issue concerning their use B. They retain stem cell properties even after specialization C. They are able to differentiate into the required cell type D. They are already specialized for this funtionarrow_forward
- Why would the failure of the p53 tumor supressor gene be more likely to cause cancer in a seventy year old person compared to a ten year old person? Group of answer choices A) The seventy year old is more likely to have pre-existing failures in cell cycle control B) cells divide more rapidly as people get older C) there are fewer mutations in genes controlling the cell cycle in older people D)the p53 gene never works well in old peoplearrow_forwardWhich 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.arrow_forwardWhich of the following is not a tumor suppressor gene? a.RET b.RB c.BRCA1 d.BRCA2arrow_forward
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