Mr. Andersen describes the two portions of the AP Biology Test. Tips for answering multiple choice and free response questions are included. Sample questions from old AP tests are also included.

Paul Andersen explains the major classification terms in ecology and how a community can be measured by species composition and species diversity. The symbiosis of leaf cutter ants is included. The podcast ends with a discussion of...

In this video Paul Andersen explains the difference between diploid and haploid cells. He starts with a brief description of the central dogma and how genes code for proteins. He then uses the phenotype of red hair to explain that...

Explore cell signaling with the Amoeba Sisters! This introductory video describes vocabulary such as ligand and receptor. It includes the stages of cell signaling (reception, transduction, and response) and different types of signaling...

Paul Andersen reviews the major within the first unit on natural selection. He starts by defining evolution and explaining how evolution can occur in a population. He reviews the population genetics and camouflage lab. He reviews...

Join the Amoeba Sisters as they take a brisk "stroll" through their biology playlist! This review video can refresh your memory of major concepts, help you identify what you need to re-study, and reinforce vocab. Expand these details for...

Paul Andersen shows you how to use a sphygmomanometer to measure the systolic and diastolic blood pressure. The the describes the elements of the laboratory portion. The temperature is gradually lowered and the respiration rate of a...

Paul Andersen describes the process of ecological succession. During this process life reestablished itself after a disturbance. During primary success all of the material is removed including the soil. For example during a volcanic...

After a polypeptide is produced in protein synthesis, it's not necessarily a functional protein yet! Explore protein folding that occurs within levels of protein structure with the Amoeba Sisters! Primary, secondary, tertiary, and...

Explore the types of passive and active cell transport with the Amoeba Sisters! Table of Contents: Intro 00:00 Importance of Cell Membrane for Homeostasis 0:41 Cell Membrane Structure 1:07 Simple Diffusion 1:45 What does it mean to "go...

Explore the sodium potassium pump (Na+/K+ pump), with the Amoeba Sisters! This video talks about why this pump is needed and provides an overview of this type of active transport. Table of Contents: 00:00 Intro 0:48 Introducing the...

Join the Amoeba Sisters for a brief tour through the human respiratory system! This video will discuss why the respiratory system is so important and address major structures such as the pharynx, larynx, trachea, bronchi, alveoli, and...

Already watched the Amoeba Sisters first video on enzymes and ready to explore a little more? In this video, the Amoeba Sisters cover a few examples of enzymes in the human body before emphasizing that enzymes are found in all the...

Paul Andersen explains the major procedures in molecular biology. He starts with a brief description of Taq polymerase extracted from the hot pools of Yellowstone Park. He then uses the analogy of the ransom note to explain each of the...

Paul Andersen explains how organisms use information to communicate with each other. Signals are used by bees doing the waggle dance to communicate the location of flowers. Territorial markings are used by wolves to establish...

Join the Amoeba Sisters on this introduction to the Integumentary System! This video first introduces the important functions of this system. Then, this video takes a general tour through the epidermis (and each stratum of the...

Join the Amoeba Sisters as they explore the excretory system! This video will first discuss two major functions of the excretory system before focusing on the nephron. The majority of this video will tour through the nephron while...

What is the domain Archaea? Explore the archaeans with the Amoeba Sisters! This introductory video compares and contrasts characteristics of Archaea with bacteria. Time-Stamped Table of Contents: 00:00 Intro 0:47 Extremophiles 1:00...

Paul Andersen reviews the major concepts within the fourth unit of the new AP Biology framework. He begins by differentiating between negative and positive feedback loops. He explains how a stable internal environment is maintained...

Explore the parts of the cell membrane with The Amoeba Sisters! Video discusses phospholipid bilayer, cholesterol, peripheral proteins, integral proteins, glycoproteins, and glycolipids - as well as why the surface area to volume ratio...

Table of Contents: 00:00 Intro 0:40 Some Examples of ATP Uses in Cell Processes 1:14 What is ATP? 1:52 How do we get ATP? 3:05 How does ATP work? Note: We received an excellent comment in an older video (about cellular respiration) that...

Explore gene expression with the Amoeba Sisters, including the fascinating Lac Operon found in bacteria! Learn how genes can be turned "on" and "off" and why this is essential for cellular function.

Paul Andersen introduces science for the science classroom. He starts with a brief description of Big Data and why it is important that we prepare future scientists to deal intelligently with large amounts of data. He explains the...

Paul Andersen explains how changes in the signal transduction pathway can affect organisms. He begins with a brief discussion of the tetrodotoxin produced by the California Newt and then explains how anthrax affects adenylate cyclase...