Essential Cell Biology (fifth Edition)
Essential Cell Biology (fifth Edition)
5th Edition
ISBN: 9780393680362
Author: ALBERTS, Bruce, Hopkin, Karen, Johnson -
Publisher: W. W. Norton & Company
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Chapter 18, Problem 13Q

A.

Summary Introduction

To explain: The mechanism through which ionizing radiations halt cell division.

Concept introduction: Ionizing radiations are those that ionize atoms or molecules by liberating electrons from their shell with the energy they discharge. Ionizing radiations consist of electromagnetic (EM) waves at the high end of the EM spectrum, atoms, ions, and subatomic particles moving at high velocity. Examples of ionizing radiations include γ-rays, X-rays, and UV rays of high end EM spectra. Specialized instruments are used to measure the levels of ionizing radiations, as they cause hazardous effects on the cells by damaging the DNA thereby cell death.

B.

Summary Introduction

To explain: The effect of mutation in a cell that prevents the cell from halting cell division even after exposure to ionizing radiation

Concept introduction: Ionizing radiations are those that ionize atoms or molecules by liberating electrons from their shell with the energy they discharge. Ionizing radiations consist of electromagnetic (EM) waves at the high end of the EM spectrum, atoms, ions, and subatomic particles moving at high velocity. Examples of ionizing radiations include γ-rays, X-rays, and UV rays of high end EM spectra. Specialized instruments are used to measure the levels of ionizing radiations, as they cause hazardous effects on the cells by damaging the DNA thereby cell death.

C.

Summary Introduction

To explain: The effect of mutation in a cell that prevents the cell from halting cell division, but the cell is unexposed to ionizing radiation

Concept introduction: Ionizing radiations are those that ionize atoms or molecules by liberating electrons from their shell with the energy they discharge. Ionizing radiations consist of electromagnetic (EM) waves at the high end of the EM spectrum, atoms, ions, and subatomic particles moving at high velocity. Examples of ionizing radiations include γ-rays, X-rays, and UV rays of high end EM spectra. Specialized instruments are used to measure the levels of ionizing radiations, as they cause hazardous effects on the cells by damaging the DNA thereby cell death.

D.

Summary Introduction

To explain: The reason why adult human beings should avoid large doses of ionizing radiation as it leads to death.

Concept introduction: Ionizing radiations are those that ionize atoms or molecules by liberating electrons from their shell with the energy they discharge. Ionizing radiations consist of electromagnetic (EM) waves at the high end of the EM spectrum, atoms, ions, and subatomic particles moving at high velocity. Examples of ionizing radiations include γ-rays, X-rays, and UV rays of high end EM spectra. Specialized instruments are used to measure the levels of ionizing radiations, as they cause hazardous effects on the cells by damaging the DNA thereby cell death.

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