Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

3. Energy & Cell Processes

Introduction to the Cell Cycle

Anatomy & Physiology

3. Energy & Cell Processes

Introduction to the Cell Cycle

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1:43 minutes

Problem 10

Textbook Question

The interphase of the cell life cycle is divided into
(a) Prophase, metaphase, anaphase, and telophase
(b) G₀, G₁, S, and G₂
(c) Mitosis and cytokinesis
(d) All of these

Verified step by step guidance

Understand the question: The problem is asking about the phases of interphase in the cell life cycle. Interphase is the period of the cell cycle when the cell is not dividing but is preparing for division.

Recall the structure of the cell cycle: The cell cycle consists of interphase and the mitotic phase. Interphase is the longest phase and is divided into specific subphases.

Identify the subphases of interphase: Interphase is divided into G1 (Gap 1), S (Synthesis), and G2 (Gap 2). Some cells may also enter a resting phase called G0, where they do not prepare for division.

Eliminate incorrect options: (a) refers to the stages of mitosis, not interphase. (c) refers to mitosis and cytokinesis, which occur after interphase. (d) is incorrect because not all options are correct.

Select the correct answer: The correct answer is (b) G0, G1, S, and G2, as these are the subphases of interphase in the cell life cycle.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Cell Cycle Stages

The cell cycle consists of distinct phases that a cell goes through to grow and divide. It is primarily divided into interphase (G1, S, G2) and the mitotic phase (mitosis and cytokinesis). Interphase is crucial for cell growth and DNA replication, while mitosis is the process of nuclear division.

Interphase

Interphase is the longest phase of the cell cycle, where the cell prepares for division. It includes three sub-phases: G1 (cell growth), S (DNA synthesis), and G2 (preparation for mitosis). During interphase, the cell performs its normal functions and duplicates its genetic material.

Mitosis

Mitosis is the process of nuclear division that ensures each daughter cell receives an identical set of chromosomes. It is divided into four stages: prophase, metaphase, anaphase, and telophase. Following mitosis, cytokinesis occurs, dividing the cytoplasm and completing the cell division process.

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Related Practice

Textbook Question

The phase of mitosis during which centrioles reach the poles and chromosomes attach to the spindle is

a. Anaphase

b. Metaphase

c. Prophase

d. Telophase

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Textbook Question

Two examples of chemotherapeutic drugs (drugs used to treat cancer) and their cellular actions are listed below. Explain why each drug could be fatal to a cell. • Vincristine (brand name Oncovin): damages the mitotic spindle • Doxorubicin (Adriamycin): binds to DNA and blocks mRNA synthesis

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Textbook Question

Cell division typically yields two daughter cells, each with one nucleus. How is the occasional binucleate condition of liver cells explained?

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Textbook Question

Contrast cytokinesis, interphase, and mitosis.

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Textbook Question

List, in sequence, the phases of the interphase stage of the cell life cycle, and briefly describe what happens in each.

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Textbook Question

List the stages of mitosis, and briefly describe the events that occur in each.