AP Biology Podcast

I Need an AP® Biology Podcast—Welcome to the STS Biology Review Pod

A podcast for AP Biology courses, The STS Biology Review Pod

Students said: “We need an AP® Biology Podcast that actually explains what we need for the exam.”

So we created the STS Biology Review Pod—a local resource to help you master AP® Bio course and exam with confidence.

🧬Episodes and Show Notes for AP® Biology Podcast

Unit 1.1 Water and Hydrogen Bonding

We review subatomic particles like protons, neutrons, and electrons. After, we discuss the nature of water’s polarity, including covalent bonding and other types. Additionally, we consider specific heat capacity, heat of vaporation, expansion with freezing, ability to be a solvent, and cohesion.

  • Release Date: Sep 08, 2025
  • Author: Schuyler Dunphy

Unit 1.2 Elements of Life

In this episode, we study the essential elements that form the foundation of all living things. We’ll introduce the “Big Four” elements—carbon, hydrogen, oxygen, and nitrogen—and break down how each one is crucial to core biological molecules and processes. [memorization acronym for big four: CHON] You’ll learn how carbon’s versatility makes complex life possible, why hydrogen and oxygen are key for water’s remarkable properties, and how nitrogen is vital for proteins and DNA. We also spotlight phosphorus, sulfur, [memorization acronym P.S.] and trace elements like iron,  zinc, iodine, and magnesium [memorization acronym IZIM ]. We explain their specialized roles in supporting life. By the end, you’ll see how just a small handful of elements orchestrate the complexity of everything from cells to ecosystems.

  • Release Date: Sep 09, 2025
  • Author: Schuyler Dunphy

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Resources:

Elements and Atoms: https://www.biology-pages.info/E/Elements.html

Hydrogen Bonds: https://www.biology-pages.info/H/HydrogenBonds.html