======================================================================
BIOLOGY 1404: EXAM 1 COMPREHENSIVE REVIEW (CHAPTERS 1-3)
======================================================================
CHAPTER 1: INTRODUCTION TO BIOLOGY
1.Definition of Biology:
• Biology is the scientific study of living organisms and their complex interactions with the environment.
• Life is highly organized and structured, following specific laws of nature.
2. Key Characteristics of Living Organisms:
• Order: Organisms are highly organized structures consisting of one or more cells.
• Sensitivity/Response to Stimuli: Movement toward or away from a stimulus (e.g., plants bending
toward light).
• Reproduction: Passing of genetic material (DNA) to offspring.
• Adaptation: Evolutionary fit of an organism to its habitat, enhancing survival.
• Growth and Development: Organisms grow according to specific instructions coded by their genes.
• Regulation/Homeostasis: The mechanism to maintain a stable internal environment despite external
changes (e.g., body temperature regulation via sweat).
• Energy Processing: Utilization of energy source for metabolic activities (e.g., Photosynthesis or
Cellular Respiration).
3.Levels Of Organization (Smallest to Largest):
• Atom: The fundamental, smallest unit of matter.
• Molecule: Chemical structure consisting of at least two atoms held together by a chemical bond.
• Organelles: Macromolecules surrounded by membranes performing specific functions inside a cell
(e.g., Mitochondria).
• Cell: The basic structural and functional unit of life (Prokaryotic vs. Eukaryotic).
• Tissues: Groups of similar cells carrying out the same function.
• Organs: Collections of tissues grouped together based on a common function.
• Organ System: Functionally related organs working together (e.g., Circulatory system).
• Organism: An individual living entity.
• Population: All individuals of a specific species living within a specific area.
• Community: The association of different populations inhabiting a common environment.
• Ecosystem: All living things in a particular area together with the non-living parts of that environment.
• Biosphere: The collection of all ecosystems, representing the zones of life on Earth.
THE SCIENTIFIC METHODS:
1. Nature of Scientific Inquiry
• Science uses a systematic approach to understand the natural world.
• Deductive Reasoning: Uses general principles to forecast specific results (Top-down logic).
• Inductive Reasoning: Uses related observations to arrive at a general conclusion (Bottom-up logic).
2.Core Steps Of The Scientific Method:
• Observation: Identifying a phenomenon or problem in the natural world.
BIOLOGY 1404: EXAM 1 COMPREHENSIVE REVIEW (CHAPTERS 1-3)
======================================================================
CHAPTER 1: INTRODUCTION TO BIOLOGY
1.Definition of Biology:
• Biology is the scientific study of living organisms and their complex interactions with the environment.
• Life is highly organized and structured, following specific laws of nature.
2. Key Characteristics of Living Organisms:
• Order: Organisms are highly organized structures consisting of one or more cells.
• Sensitivity/Response to Stimuli: Movement toward or away from a stimulus (e.g., plants bending
toward light).
• Reproduction: Passing of genetic material (DNA) to offspring.
• Adaptation: Evolutionary fit of an organism to its habitat, enhancing survival.
• Growth and Development: Organisms grow according to specific instructions coded by their genes.
• Regulation/Homeostasis: The mechanism to maintain a stable internal environment despite external
changes (e.g., body temperature regulation via sweat).
• Energy Processing: Utilization of energy source for metabolic activities (e.g., Photosynthesis or
Cellular Respiration).
3.Levels Of Organization (Smallest to Largest):
• Atom: The fundamental, smallest unit of matter.
• Molecule: Chemical structure consisting of at least two atoms held together by a chemical bond.
• Organelles: Macromolecules surrounded by membranes performing specific functions inside a cell
(e.g., Mitochondria).
• Cell: The basic structural and functional unit of life (Prokaryotic vs. Eukaryotic).
• Tissues: Groups of similar cells carrying out the same function.
• Organs: Collections of tissues grouped together based on a common function.
• Organ System: Functionally related organs working together (e.g., Circulatory system).
• Organism: An individual living entity.
• Population: All individuals of a specific species living within a specific area.
• Community: The association of different populations inhabiting a common environment.
• Ecosystem: All living things in a particular area together with the non-living parts of that environment.
• Biosphere: The collection of all ecosystems, representing the zones of life on Earth.
THE SCIENTIFIC METHODS:
1. Nature of Scientific Inquiry
• Science uses a systematic approach to understand the natural world.
• Deductive Reasoning: Uses general principles to forecast specific results (Top-down logic).
• Inductive Reasoning: Uses related observations to arrive at a general conclusion (Bottom-up logic).
2.Core Steps Of The Scientific Method:
• Observation: Identifying a phenomenon or problem in the natural world.
