Textbook Question
Membrane junctions that allow nutrients or ions to flow from cell to cell are:
a. Desmosomes
b. Gap junctions
c. Tight junctions
d. All of these
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Ch. 3 Cells: The Living Units
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034
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Table of contents
- Ch. 1 The Human Body: An Orientation24
- Ch. 2 Chemistry Comes Alive25
- Ch. 3 Cells: The Living Units21
- Ch. 4 Tissue: The Living Fabric20
- Ch. 5 The Integumentary System11
- Ch. 6 Bones and Skeletal Tissues19
- Ch. 7 The Skeleton14
- Ch. 8 Joints7
- Ch. 9 Muscles and Muscle Tissue26
- Ch. 10 The Muscular System26
- Ch. 11 Fundamentals of the Nervous System and Nervous Tissue19
- Ch. 12 The Central Nervous System26
- Ch. 13 The Peripheral Nervous System and Reflex Activity32
- Ch. 14 The Autonomic Nervous System19
- Ch. 15 The Special Senses26
- Ch. 16 The Endocrine System23
- Ch. 17 Blood25
- Ch. 18 The Cardiovascular System: The Heart24
- Ch. 19 The Cardiovascular System: Blood Vessels27
- Ch. 20 The Lymphatic System and Lymphoid Organs and Tissues14
- Ch. 21 The Immune System: Innate and Adaptive Body Defenses27
- Ch. 22 The Respiratory System21
- Ch. 23 The Digestive System31
- Ch. 24 Nutrition, Metabolism, and Energy Balance26
- Ch. 25 The Urinary System26
- Ch. 26 Fluid, Electrolyte, and Acid-Base Balance24
- Ch. 27 The Reproductive System24
- Ch. 28 Pregnancy and Human Development25
- Ch. 29 Heredity11
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034Not the one you use?Change textbook
Chapter 3, Problem 1
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 guidance1
Understand the hierarchy of biological organization, which ranges from atoms and molecules up to organs and organ systems.
Recall that an organelle is a specialized structure within a cell, but it cannot live independently outside the cell.
Recognize that tissues are groups 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 the control center, but it is not capable of life on its own.
Conclude that the cell is the smallest unit capable of life by itself because it can carry out all necessary life processes such as metabolism, growth, and reproduction.
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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.
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Elements of Life
Organelle Function and Limitations
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, as they rely on the cell's environment and systems.
Recommended video:
03:45Introduction to Eukaryotic Organelles
Hierarchy of Biological Organization
Biological structures are organized hierarchically from molecules to cells, tissues, organs, and organ systems. Tissues and organs are composed of many cells working together, but they cannot function or live independently like a single cell can.
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06:49Biological Membranes
Related Practice
Textbook Question
The major types of lipids found in the plasma membranes are (choose two):
a. Cholesterol
b. Triglycerides
c. Phospholipids
d. Fat-soluble vitamins
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Textbook Question
Osmosis always involves:
a. A selectively permeable membrane
b. A difference in solute concentration
c. Diffusion
d. Active transport
e. a, b, and c
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