Biology Illinois Edition (Glencoe Science)
7th Edition
ISBN: 9780078759864
Author: Alton Biggs
Publisher: MCG
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Question
Chapter 9, Problem 43A
Summary Introduction
To summarize:
The relationship betweenthe occurrence of cancer and age
Introduction:
A cell cycle has a system of control checkpoints to monitor the cycle and stop it if something goes wrong. Sometimes cells fail to respond to normal cell cycle control mechanisms and this leads to uncontrolled growth and division of cells.
Expert Solution & Answer
Answer to Problem 43A
There is a greater risk of cancer developing at old age.
Explanation of Solution
Cancer is uncontrolled growth and division of cells. The changes occur in regulation of cell growth and division of cancer cells due to mutations or changes in certain segments of DNA. More than one change is required to change an abnormal cell into a cancer cell. Over time it is possible that there could be many changes in DNA. Often the genes are altered due to some environmental factors, age and food habits. As the person enters old age, his overall health begins to deteriorate and the immune system weakens. So there is an increased chance of cancer at old age.
Chapter 9 Solutions
Biology Illinois Edition (Glencoe Science)
Ch. 9 - Prob. 1ACh. 9 - Prob. 2ACh. 9 - Prob. 3ACh. 9 - Prob. 4ACh. 9 - Prob. 5ACh. 9 - Prob. 6ACh. 9 - Prob. 7ACh. 9 - Prob. 8ACh. 9 - Prob. 9ACh. 9 - Prob. 10A
Ch. 9 - Prob. 11ACh. 9 - Prob. 12ACh. 9 - Prob. 13ACh. 9 - Prob. 14ACh. 9 - Prob. 15ACh. 9 - Prob. 16ACh. 9 - Prob. 17ACh. 9 - Prob. 18ACh. 9 - Prob. 19ACh. 9 - Prob. 20ACh. 9 - Prob. 21ACh. 9 - Prob. 22ACh. 9 - Prob. 23ACh. 9 - Prob. 24ACh. 9 - Prob. 25ACh. 9 - Prob. 26ACh. 9 - Prob. 27ACh. 9 - Prob. 28ACh. 9 - Prob. 29ACh. 9 - Prob. 30ACh. 9 - Prob. 31ACh. 9 - Prob. 32ACh. 9 - Prob. 33ACh. 9 - Prob. 34ACh. 9 - Prob. 35ACh. 9 - Prob. 36ACh. 9 - Prob. 37ACh. 9 - Prob. 38ACh. 9 - Prob. 39ACh. 9 - Prob. 40ACh. 9 - Prob. 42ACh. 9 - Prob. 43ACh. 9 - Prob. 44ACh. 9 - Prob. 45ACh. 9 - Prob. 46ACh. 9 - Prob. 47ACh. 9 - Prob. 1STPCh. 9 - Prob. 2STPCh. 9 - Prob. 3STPCh. 9 - Prob. 4STPCh. 9 - Prob. 5STPCh. 9 - Prob. 6STPCh. 9 - Prob. 7STPCh. 9 - Prob. 8STPCh. 9 - Prob. 9STPCh. 9 - Prob. 10STPCh. 9 - Prob. 11STPCh. 9 - Prob. 12STPCh. 9 - Prob. 13STPCh. 9 - Prob. 14STPCh. 9 - Prob. 15STPCh. 9 - Prob. 16STPCh. 9 - Prob. 17STPCh. 9 - Prob. 18STPCh. 9 - Prob. 19STP
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