Biology: Concepts and Investigations
Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 8, Problem 4MCQ
Summary Introduction

Introduction:

Mutation is a permanent alteration in the nucleotide sequence of genome which sometime results in the development of new organism. Sometimes, mutation can be fatal too.

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Which of the following accurately compares tumor suppressor genes and proto-oncogenes? A. Both tumor suppressor and proto-oncogenes prevent the spread of cancer by targeting and destroying existing cancer cells. B. A person who has both tumor suppressor and proto-oncogenes will always develop cancer. C. Proto-oncogenes code for growth factors, while tumor suppressor genes inhibit cell division of damaged cells. D. When a proto-oncogene mutates, it becomes a tumor suppressor gene.
Which of the following statements about cancer is correct? A. Cancer stem cells can make tumors resistant to chemotherapy. B. Intra-tumoral heterogeneity makes it easier to treat cancer. C. Mutation in p53 is a type of passenger mutation. D. One driver mutation is more than sufficient for the production of a cancer phenotype.
Which of the following demonstrates the link between oncogenes and cancer?   a.Oncogenes do not have mutations that increase the activity or number of molecules that stimulate mitosis.   b.Oncogenes produce molecules that inhibit mitosis.   c.They are genes that transform tumor cells into normal cells.   d.The mutations in oncogenes increase the activity or number of molecules that stimulate mitosis, leading to irregular cell division.
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An Introduction to the Human Genome | HMX Genetics; Author: Harvard University;https://www.youtube.com/watch?v=jEJp7B6u_dY;License: Standard Youtube License