How do organisms use different life history strategies to maximize fitness? Learn about different ways that different species allocate energy and other resources between growth, maintenance/survival, and reproduction.
This video presents the structure and functions of ligaments, joints, and tendons. Created by Tracy Kim Kovach.
Logistic growth versus exponential growth (for familiarity with AP Biology formula sheet).
Introduction to how cell cycle control is lost in cancers.
This Smithsonian K-12 Education website provides a brief overview of mahogany tide (also known as red tide) events. These events are caused by dinoflagellates, a special type of phytoplankton, and can harm sea life. This website also features links to other related red tide sites.
Overview of the gastrointestinal tract.
Find out exactly where the heart rests in your body and what it does. Rishi is a pediatric infectious disease physician and works at Khan Academy. Created by Rishi Desai.
Every time you take a breath, oxygen makes it way into your lungs. Follow along on that journey! Rishi is a pediatric infectious disease physician and works at Khan Academy. Created by Rishi Desai.
Insert channels in a membrane and see what happens. See how different types of channels allow particles to move through the membrane.
Insert channels in a membrane and see what happens. See how different types of channels allow particles to move through the membrane.
Learn about how membrane receptors work in our body. Created by William Tsai.
This Protein Purification video lesson is intended to give students some insight into the process and tools that scientists and engineers use to explore proteins. It is designed to extend the knowledge of students who are already somewhat sophisticated and who have a good understanding of basic biology. The question that motivates this lesson is, ''what makes two cell types different?'' and this question is posed in several ways. Such scientific reasoning raises the experimental question: how could you study just a subset of specialized proteins that distinguish one cell type from another? Two techniques useful in this regard are considered in the lesson.
Microbiology covers the scope and sequence requirements for a single-semester microbiology course for non-majors. The book presents the core concepts of microbiology with a focus on applications for careers in allied health. The pedagogical features of the text make the material interesting and accessible while maintaining the career-application focus and scientific rigor inherent in the subject matter. Microbiology’s art program enhances students’ understanding of concepts through clear and effective illustrations, diagrams, and photographs.
The structure and role of mitochondria (plural for mitochondrion). Outer membrane, inner membrane, cristae, porins, etc.
Mitosis is how cells divide! Learn what happens in all the phases of mitosis: prophase, metaphase, anaphase, and telophase.
Two example items (from NY Regents exams) using molecular evidence to think about how closely related different species are.
Molecular structure of DNA. Nucleotide. Nitrogenous base, phosphate.
Molecular structure of RNA.
Understanding how a triglyceride (triacylglycerol) can be formed from a glycerol molecule and three fatty acids.
This video from Nature features the start of the monarch butterflyë_í__ northward trek.