Overview of the nucleus, endoplasmic reticulum, Golgi bodies, vacuoles, mitochondria, chloroplasts and lysosomes. [9:38]

A few more examples of exponential decay. Practice calculating k from half-life, and calculating initial mass. [7:22]

Learn about the cell organelle that contains the DNA in this video. [6 min. 4 sec.]

A video explaining the structure and function of the basis organelles found in an animal cell. [1:23]

This video takes you inside the atom to learn about the subatomic particles present and their location. Also learn about what the atomic number and mass number tell you about the number of protons, neutrons, and electrons. [1:35]

Learn the three sub-particles that make up an atom in this video. Video gives a visualization to what an atom, the basic building of matter, looks like. [1:15]

This lesson will briefly summarize the early history of the atomic theory including Democritus, John Dalton, JJ Thomson, and Ernest Rutherford.. It is 4 of 4 in the series titled "Development of the Early Atomic Theory."

This lesson will explain that electrons are negatively charged particles with negligible mass and are found in pairs in orbitals surrounding the nucleus of an atom. It is 1 of 3 in the series titled "Subatomic Particles: The Electron."

This lesson will explain that neutrons are particles in the nucleus that have no charge and a mass of one amu. It is 1 of 3 in the series titled "Subatomic Particles: The Neutron."

This lesson will explain that protons are positively charged particles having a mass of one amu and are found in the nucleus of the atom. It is 3 of 3 in the series titled "Subatomic Particles: The Proton."

This lesson will explain that protons are positively charged particles having a mass of one amu and are found in the nucleus of the atom. It is 1 of 3 in the series titled "Subatomic Particles: The Proton."

This lesson will illustrate that an atom is mostly empty space and has a positively charged, massive core (containing both protons and neutrons called the nucleus) surrounded by negatively charged electrons. It is 1 of 3 in the series...

Explains how DNA contains genetic material and how it is housed in chromosomes. This lesson is 3 of 5 in the series titled "DNA."

This lesson will discuss the structure and function of the nucleus. It is 1 of 5 in the series titled "Nucleus."