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

Cell Cycle Regulation

Anatomy & Physiology

3. Energy & Cell Processes

Cell Cycle Regulation

Previous problemNext problem

Problem 5

Textbook Question

Apoptosis involves all but which of the following?a. fragmentation of the DNAb. cell-signaling pathwaysc. lysis of the celld. digestion of cellular contents by scavenger cells

Verified step by step guidance

Understand the concept of apoptosis: Apoptosis is a form of programmed cell death that occurs in multicellular organisms, characterized by specific cellular changes.

Identify the typical features of apoptosis: These include cell shrinkage, chromatin condensation, DNA fragmentation, and the formation of apoptotic bodies.

Consider the role of cell-signaling pathways: Apoptosis is regulated by cell-signaling pathways that trigger the apoptotic process.

Evaluate the involvement of scavenger cells: After apoptosis, scavenger cells, such as macrophages, digest the cellular contents to prevent inflammation.

Analyze the option of cell lysis: In apoptosis, the cell does not undergo lysis (bursting), which is a feature of necrosis, not apoptosis.

Was this helpful?

Key Concepts

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

Apoptosis

Apoptosis is a programmed cell death process that is essential for maintaining cellular homeostasis and development. It involves a series of biochemical events leading to characteristic cell changes and death, including DNA fragmentation and cellular shrinkage. Unlike necrosis, apoptosis is a controlled process that prevents inflammation and damage to surrounding tissues.

Cell Signaling Pathways

Cell signaling pathways are complex networks of molecules that communicate signals from a cell's exterior to its interior, influencing cellular responses. In apoptosis, these pathways regulate the activation of caspases, which are enzymes that execute the death program. Understanding these pathways is crucial for identifying how cells decide to undergo apoptosis in response to various stimuli.

Cell Lysis

Cell lysis refers to the breaking down or destruction of a cell membrane, leading to the release of cellular contents into the surrounding environment. This process is typically associated with necrosis rather than apoptosis, as apoptosis involves the orderly dismantling of cellular components without causing inflammation or damage to neighboring cells.