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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 11, Problem 5SQ
Textbook Problem
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Most healthy body cells spend the majority of their lives in ________.

  1. a. prophase
  2. b. metaphase
  3. c. anaphase
  4. d. telophase
  5. e. interphase
  6. f. senescence

Summary Introduction

Concept introduction: In the interphase stage, the size of the cells will be increased, DNA is replicated, and the components required for the division is produced. These activities take place through three major stages G1, S, and G2. In the G1 phase, the differentiated body cells exit the cell cycle and will remain in the G0 phase. The replication of the DNA occurs in the S phase, and components required for the division are made during the G2 phase.

Explanation of Solution

Reason for the correct statement:

Mostly, all the adult mammals spend 20 hours in the interphase stage. G1, S, and G2 are the three phases in the interphase. The cells take 5-6 hours to complete the S phase. G2 phase will last up to 3-4 hours in most cells. The length of these intervals will differ among the different cells.

Option e. is given as “interphase”.

Interphase stage requires time for the DNA replication and producing the component for the division. Therefore, option e. is correct.

Reasons for the incorrect statements:

Option a. is given as “prophase”.  A typical cell spends around three hours to complete the prophase stage in cell cycle. So, option a. is incorrect.

Option b. is given as “metaphase”. It requires just 128.2 minutes for the cell to complete the prophase stage in the mitosis process...

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