AP Biology: Course Foundations and Scientific Method

AP Biology Course Overview and Scientific Inquiry

AP Biology Course Structure

• The AP Biology course focuses on core scientific principles, theories, and processes that govern living organisms and biological systems.

• The curriculum is divided into two main components:

  • Science Practices (Skills): Abilities students are expected to develop and apply.

  • Content: The biological knowledge covered.

Science Practices

• These are essential skills that students are expected to acquire and utilize throughout the course.

• The Science Practices include:

  • Concept Explanation: Articulating biological concepts clearly.

  • Analyze Visual Representations: Interpreting and drawing conclusions from diagrams, graphs, and images.

  • Determine Scientific Questions and Methods: Formulating research questions and designing appropriate experimental methods.

  • Represent and Describe Data: Organizing and summarizing data effectively.

  • Perform Statistical Tests and Data Analysis: Applying statistical methods to analyze data and interpret results.

  • Develop and Justify Scientific Arguments Using Evidence: Constructing well-reasoned arguments supported by empirical evidence.

Big Ideas in AP Biology

• The content of AP Biology is structured around four foundational Big Ideas:

  • Big Idea 1: Evolution

    • Description: The process of evolution is the driving force behind the diversity and unity observed in all forms of life.

  • Big Idea 2: Energetics

    • Description: Biological systems continuously utilize energy and molecular building blocks to facilitate growth, reproduction, and the maintenance of dynamic homeostasis.

  • Big Idea 3: Information Storage and Transmission

    • Description: Living systems possess mechanisms to store, retrieve, transmit, and respond to vital information that is essential for life processes.

  • Big Idea 4: Systems Interactions

    • Description: Biological systems engage in complex interactions, and these systems and their interactions exhibit emergent properties.

• These Big Ideas form the basic framework of the course and are further elaborated through:

  • Enduring Understandings: The long-term, significant takeaways that students should retain from each concept.

  • Learning Objectives: Specific statements defining what a student must be able to perform using their content knowledge to achieve the enduring understandings.

  • Essential Knowledge: Describes the specific information and facts required to successfully meet each learning objective.

Course Units

• The AP Biology course is organized into $8$ units, with Big Ideas overlapping and building upon each other across units, emphasizing the cumulative nature of the material.

• The units are:

  • Unit 1: Chemistry of Life (Associated Big Ideas: $2, 3, 4$)

  • Unit 2: Cell Structure and Function (Associated Big Ideas: $1, 2, 4$)

  • Unit 3: Cellular Energetics (Associated Big Ideas: $2, 4$)

  • Unit 4: Cell Communication and Cell Cycle (Associated Big Ideas: $2, 3$)

  • Unit 5: Heredity (Associated Big Ideas: $1, 3, 4$)

  • Unit 6: Gene Expression and Regulation (Associated Big Idea: $3$)

  • Unit 7: Natural Selection (Associated Big Ideas: $1, 4$)

  • Unit 8: Ecology (Associated Big Ideas: $1, 2, 3, 4$)

• Importance of Interconnectedness: The overlapping Big Ideas mean that knowledge gained in earlier units is crucial and will be applied in subsequent units, highlighting the necessity of continuous retention of learned material.

The Nature of Science: Inquiry

• At its core, science is an iterative process of inquiry, which is defined as a search for information and explanations.

• The two main foundational steps in scientific inquiry are:

  • Making observations.

  • Forming hypotheses.

Making Observations and Data Collection

• Observations: Scientists describe natural structures and processes through careful observation and the analysis of data.

• Data: Recorded observations.

  • Qualitative Data: Observations made using senses; descriptive (e.g., color, texture).

  • Quantitative Data: Measurements taken using instruments; numerical (e.g., length, mass, volume).

• Inductive Reasoning: A process of deriving broad generalizations from a large number of specific observations.

  • Example 1: If every test has been easy, one might inductively reason that the final exam will also be easy.

  • Example 2: Based on years of research showing that individual organisms are composed of cells, the generalization that all organisms are made of cells can be drawn.

Forming Hypotheses

• Hypothesis: A testable prediction or proposed explanation to a question, which can be investigated through further observations or experiments.

  • Common Format: Often structured as