Table of contents

1. Introduction to Anatomy & Physiology5h 42m
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 Heart2h 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

Cell Cycle Regulation

Anatomy & Physiology

3. Energy & Cell Processes

Cell Cycle Regulation

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2:33 minutes

Problem 10

Textbook Question

Cytochalasin B is a chemical that disrupts microfilament formation. This chemical would interfere witha. DNA replication.b. formation of the mitotic spindle.c. cleavage.d. formation of the cell plate.

Verified step by step guidance

Understand that cytochalasin B disrupts microfilament formation, which are part of the cytoskeleton.

Recall that microfilaments, composed of actin, play a crucial role in cell movement and division.

Consider the processes listed: DNA replication, mitotic spindle formation, cleavage, and cell plate formation.

Identify that cleavage, the process of cytokinesis in animal cells, relies heavily on microfilaments to form the contractile ring.

Conclude that cytochalasin B would interfere with cleavage due to its role in disrupting microfilament formation.

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Key Concepts

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

Microfilaments

Microfilaments are thin, thread-like structures made of actin that are part of the cytoskeleton in eukaryotic cells. They play a crucial role in maintaining cell shape, enabling cell movement, and facilitating various cellular processes, including cytokinesis. Disruption of microfilament formation can significantly impact these functions.

Cytokinesis

Cytokinesis is the process during cell division where the cytoplasm of a parental cell is divided into two daughter cells. This process typically follows mitosis and involves the formation of a cleavage furrow in animal cells or a cell plate in plant cells. Microfilaments are essential for the contractile ring that helps in the cleavage of the cell.

Cell Plate Formation

Cell plate formation is a key process in plant cell division, where vesicles containing cell wall materials fuse at the center of the dividing cell to form a new cell wall. This process is crucial for separating the two daughter cells. Disruption of microfilament formation can hinder the proper assembly and function of the structures involved in cell plate formation.