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

2. Cell Chemistry & Cell Components

Prokaryotic & Eukaryotic Cells

Anatomy & Physiology

2. Cell Chemistry & Cell Components

Prokaryotic & Eukaryotic Cells

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1:07 minutes

Problem 1

Textbook Question

The smallest unit capable of life by itself is:
a. The organ
b. The organelle
c. The tissue
d. The cell
e. The nucleus

Verified step by step guidance

Understand the hierarchy of biological organization: organelles make up cells, cells make up tissues, tissues make up organs, and organs make up organ systems.

Recall that an organelle is a specialized structure within a cell, but it cannot live independently outside the cell.

Recognize that a tissue is a group of similar cells working together, but individual cells are the smallest units that can perform all life functions independently.

Identify that the nucleus is a part of the cell, specifically an organelle, and cannot live independently.

Conclude that the cell is the smallest unit capable of life by itself because it can carry out all necessary life processes independently.

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Key Concepts

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

Cell as the Basic Unit of Life

The cell is the smallest unit capable of performing all life processes independently. It can grow, reproduce, respond to stimuli, and carry out metabolism, making it the fundamental building block of all living organisms.

Organelles and Their Role

Organelles are specialized structures within a cell that perform specific functions, such as energy production or protein synthesis. However, organelles cannot live independently outside the cell.

Hierarchy of Biological Organization

Biological structures are organized hierarchically from organelles to cells, tissues, and organs. While organs and tissues are made of many cells working together, only the cell can independently sustain life.

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