Bozeman Science
Probability in Genetics: Multiplication and Addition Rules
Paul Andersen shows you how to use the rules of multiplication and addition to correctly solve genetics problems. The rule of multiplication can be applied to independent events in sequence. The rule of addition can be applied to...
Bozeman Science
Naming Compounds - Part 2
Mr. Andersen shows you how write the chemical formula for chemical names.
Bozeman Science
Limiting Reactants and Percent Yield
Mr. Andersen explains the concept of a limiting reactant (or a limiting reagent) in a chemical reaction. He also shows you how to calculate the limiting reactant and the percent yield in a chemical reaction.
Bozeman Science
Abiogenesis
Paul Andersen describes how life could have formed on our planet through natural processes. The progression from monomers, to polymers, to protocells and finally to cells is described. The Miller-Urey experiment is described in detail as...
Bozeman Science
The Central Dogma: Transcription and Translation
Mr. Andersen explains the Central Dogma of biology. He shows how DNA is transcribed to form mRNA and how mRNA is translated into a protein.
Bozeman Science
The Cell Membrane
Paul Andersen gives you a brief introduction to the cell membrane. He starts by describing amphipathic nature of a phospholipid and how it assembles into a membrane. He gives an overview of the fluid mosaic model inside cells. He also...
Bozeman Science
Electricity and Electric Circuits
Mr. Andersen introduces the topic of electricity. He differentiates between static electricity and current electricity. An introduction to electric circuits is also included.
Bozeman Science
AP Biology Lab 9: Transpiration
Paul Andersen starts by defining transpiration as evaporation off of a leaf. He then describes how a potometer can be used to measure the rate of transpiration in different environments.
Bozeman Science
Organ Systems
Paul Andersen explains how organs work together to form organ systems and how organ systems work together to form organisms. The kidney and bladder work together to filter blood in the excretory system. The circulatory and respiratory...
Bozeman Science
Biotic and Abiotic Factors
Paul Andersen differentiates between biotic and abiotic factors. He explains how both abiotic and biotic factors can affect organisms at the level of the cell, the population and even the ecosystem. The complexities of biofilms,...
Bozeman Science
Energy, Work and Power
Mr. Andersen defines the terms energy, work and power. He also uses a simple example to calculate both work and power.
SciShow
Why Do Humans Like to Get High?
We’ve told you before that there really isn’t any evidence that animals consume mind-altering substances because they feel good to them. This makes it appear that the fondness for psychoactive drugs is, pretty...human. What is it about...
SciShow
3 Friendly Robots Improving Our Social Lives
You might think of robots as unfeeling, and maybe even kind of cold, but some robots are specifically programmed to help people improve their social skills and emotional health. Here are a few that might make really good pals!
Bozeman Science
AP Biology Lab 3: Mitosis and Meiosis
Paul Andersen compares and contrasts mitosis and meiosis. He shows how you can count cells in various phases of mitosis to construct a cell cycle pie chart. He also explains how you can use the fungus Sordaria to calculate map units...
Bozeman Science
AP Biology Practice 6 - Scientific Explanations and Theories
In this video Paul Andersen explains how scientific theories are created and modified over time. He starts by discussing the theory of natural selection as a model for the creation and modification of theories. He gives examples of...
Bozeman Science
The Factor-Label Method
Mr. Andersen shows you how to use the factor label method to solve complex conversions.
Bozeman Science
The Secret of Life
Paul Andersen explains how the central dogma of biology explains life on our planet. He starts with a brief discussion of common characteristics of all life. He then explains how DNA is used to make proteins which in turn make you. He...
Bozeman Science
Homeostasis Preview
Paul Andersen reviews the major components of the homeostasis. He explains how organisms respond to abiotic and biotic factors in their environment with feedback loops. He shows how responses can be behavioral or physiological.
Bozeman Science
Cellular Respiration Lab Walkthrough
Mr. Andersen walks you through the cellular respiration lab.
Bozeman Science
Osmosis Lab Walkthrough
Mr. Andersen shows you how to properly core potatoes for the osmosis lab. A thorough description of the lab protocol is included along with a brief description of percent mass change.
Bozeman Science
A Beginner's Guide to Punnett Squares
Paul Andersen introduces the Punnett Square as a a powerful tool in genetic analysis. He tries to address major misconceptions that students have when use a Punnett Square. He gives a number of examples of monohybrid crosses and one...
Bozeman Science
Potential and Kinetic Energy
Mr. Andersen explains the difference between potential and kinetic gravitational energy. He also uses physics to calculate the energy in various objects.
Bozeman Science
Metacognition: Learning about Learning
Paul Andersen gives ten tips on increasing comprehension.
Bozeman Science
Polymers
Paul Andersen explains how polymers are formed from monomers. He describes how carbohydrates, protein and nucleic acids are created through condensation reactions. He also explains how these macromolecules are broken down through the...