Open Question
Use the word bank to complete the pyramid of life's organizational hierarchy below.
Word Bank:
Population
Organelles
Organ System
Cell
Tissues
Ecosystem
Organ
Community
Molecules
Multicellular Organism
Table of contents
- 1. Introduction to Biology2h 17m
- 2. Chemistry of Life7h 30m
- Atoms - Smallest Unit of Matter58m
- Isotopes36m
- Introduction to Chemical Bonding21m
- Covalent Bonds40m
- Noncovalent Bonds5m
- Ionic Bonding37m
- Hydrogen Bonding19m
- Introduction to Water7m
- Properties of Water - The Universal Solvent13m
- Properties of Water - Thermal14m
- Acids and Bases13m
- pH Scale21m
- Carbon8m
- Monomers & Polymers11m
- Carbohydrates23m
- Lipids28m
- Proteins31m
- Nucleic Acids34m
- ATP22m
- 3. Structure & Function of Cells6h 14m
- Prokaryotic & Eukaryotic Cells26m
- Microscopes11m
- Introduction to Eukaryotic Organelles16m
- Endomembrane System: Protein Secretion25m
- Endomembrane System: Digestive Organelles12m
- Mitochondria & Chloroplasts21m
- Introduction to the Cytoskeleton11m
- Biological Membranes10m
- Concentration Gradients and Diffusion9m
- Introduction to Membrane Transport15m
- Osmosis31m
- Simple and Facilitated Diffusion17m
- Passive vs. Active Transport13m
- Active Transport30m
- Endocytosis & Exocytosis15m
- Introduction to Metabolism8m
- Introduction to Cellular Respiration22m
- Types of Phosphorylation14m
- Glycolysis20m
- Pyruvate Oxidation8m
- Krebs Cycle16m
- Electron Transport Chain14m
- 4. Tissues & Organ Systems7h 6m
- Introduction to Tissues & Histology16m
- Introduction to Epithelial Tissue24m
- Characteristics of Epithelial Tissue35m
- Structural Naming of Epithelial Tissue19m
- Introduction to Connective Tissue36m
- Classes of Connective Tissue8m
- Introduction to Connective Tissue Proper40m
- Specialized Connective Tissue: Cartilage44m
- Specialized Connective Tissue: Bone12m
- Specialized Connective Tissue: Blood9m
- Introduction to Muscle Tissue7m
- Types of Muscle Tissue45m
- Introduction to Nervous Tissue8m
- Nervous Tissue: The Neuron8m
- Levels of Organization13m
- Introduction to Organ Systems27m
- Homeostasis10m
- Feedback Loops11m
- Feedback Loops: Negative Feedback19m
- Feedback Loops: Positive Feedback11m
- Introduction to the Integumentary System14m
- 5. The Skeletal System4h 17m
- An Introduction to Bone and Skeletal Tissue18m
- Gross Anatomy of Bone: Compact and Spongy Bone7m
- Gross Anatomy of Bone: Periosteum and Endosteum11m
- Gross Anatomy of Bone: Bone Marrow8m
- Gross Anatomy of Bone: Short, Flat, and Irregular Bones5m
- Gross Anatomy of Bones - Structure of a Long Bone23m
- Microscopic Anatomy of Bones - Bone Matrix9m
- Introduction to the Skeleton6m
- The Skull49m
- The Spine13m
- The Thoracic Cage11m
- The Pectoral Girdle11m
- Bones of the Upper Limb18m
- The Pelvic Girdle22m
- Bone of the Lower Limb21m
- Introduction to Joints18m
- 6. The Muscular System2h 45m
- 7. Blood4h 23m
- 8. The Heart & Blood Vessels4h 16m
- 9. The Immune & Lymphatic Systems10h 53m
- Introduction to the Lymphatic System26m
- Lymphoid Cells & Tissues15m
- Overview of Lymphoid Organs8m
- Primary Lymphoid Organs24m
- Secondary Lymphoid Organs: Lymph Nodes26m
- Secondary Lymphoid Organs: The Spleen25m
- Introduction to Immunity8m
- Introduction to Innate Immunity17m
- Introduction to First-Line Defenses5m
- Physical Barriers in First-Line Defenses: Skin13m
- Physical Barriers in First-Line Defenses: Mucous Membrane9m
- First-Line Defenses: Chemical Barriers20m
- First-Line Defenses: Normal Microbiota5m
- Introduction to Cells of the Immune System15m
- Cells of the Immune System: Granulocytes29m
- Cells of the Immune System: Agranulocytes25m
- Introduction to the Complement System24m
- Antigens12m
- Introduction to T Lymphocytes38m
- Major Histocompatibility Complex Molecules20m
- Functions of T Lymphocytes25m
- Review of Cytotoxic vs. Helper T Cells13m
- Introduction to B LymphocytesBonus27m
- Antibodies14m
- Classes of Antibodies35m
- Primary & Secondary Response of Adaptive Immunity21m
- Types of Acquired Immunity13m
- Introduction to Vaccines13m
- Immunotherapy: Monoclonal Antibodies12m
- Introduction to Antimicrobial Drugs8m
- How Antimicrobial Drugs Work10m
- Antimicrobial Resistance29m
- Type I Hypersensitivities27m
- Autoimmune Diseases22m
- 10. The Respiratory System3h 20m
- 11. The Nervous System & Nervous Tissue4h 25m
- Ions - Sodium and Potassium19m
- Resting Membrane Potential11m
- Change in Membrane Potential6m
- Properties of Graded and Action Potentials9m
- Graded Potentials17m
- Action Potentials10m
- The Refractory Period8m
- Propagation of Action Potentials11m
- Introduction to the Central Nervous System18m
- The Cerebrum48m
- Introduction to the Autonomic Nervous System10m
- Control of the ANS11m
- Introduction to Reflex Arcs13m
- Reflex Arcs15m
- Sympathetic Nervous System39m
- Parasympathetic Nervous System8m
- Review of the Sympathetic and Parasympathetic Divisions5m
- 12. Sensory Mechanisms44m
- 13. The Endocrine System2h 47m
- 14. The Digestive System and Nutrition4h 36m
- Overview of the Digestive System21m
- Organs of the Gastrointenstinal Tract32m
- Accessory Organs9m
- Nutrient Absorption and Transport12m
- Introduction to Nutrition9m
- Dietary Guidelines for Americans26m
- Macronutrients11m
- Micronutrients11m
- Fiber and Phytochemicals6m
- Food Labels29m
- Energy in Food15m
- Healthy Weight7m
- Energy Balance28m
- Eating Disorders32m
- Disorders of the Digestive System22m
- 15. The Urinary System2h 39m
- 16. The Reproductive System2h 32m
- 17. Cell Reproduction & Differentiation4h 54m
- Introduction to Cell Division23m
- Organization of DNA in the Cell17m
- Introduction to the Cell Cycle7m
- Genes & Alleles10m
- Central Dogma7m
- Introduction to Transcription20m
- Steps of Transcription22m
- Introduction to Types of RNA9m
- Genetic Code23m
- Introduction to Translation30m
- Steps of Translation23m
- Phases of Mitosis48m
- Introduction to Meiosis9m
- Meiosis I12m
- Meiosis II11m
- Cell Cycle Regulation15m
- 18. Cancer37m
- 19. Genetics & Inheritance3h 33m
- 20. Genetic Engineering1h 43m
- 21. Development, Maturation & Aging1h 21m
- 22. Evolution and the Origins of Life4h 5m
- 23. Ecology3h 17m
- 24. Human Environmental Impact24m
1. Introduction to Biology
Life's Organizational Hierarchy
Multiple Choice
Which of the following options has the correct order in terms of the hierarchy of the organization?
A
Ecosystem → Biosphere → Population → Community → Organism.
B
Biosphere → Ecosystem → Population → Community → Organism.
C
Ecosystem → Community → Biosphere → Population → Organism.
D
Biosphere → Ecosystem →Community → Population → Organism.
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