Cell Biology Archive

Klebsiella pneumoniae

The Evolution of the Superbugs

In August 2016, a woman in her late 20s arrived in a hospital in Reno, Nevada, carrying a particularly deadly strain of the bacteria Klebsiella pneumoniae. The woman, who recently had traveled to India, and …

Cancer, Elephants and P53

What is p53? Also known as a tumor protein or a cellular tumor antigen, p53 (also sometimes called TP53) is a gene that codes for proteins which in essence keep cancerous tumors from forming. Along with another cancer-suppressing …

New Video Series: Understanding Enzymes

Enzymes are a critical component of living systems. Without enzymes, most of the chemical reactions in our bodies would simply not occur. So, an understanding of basic enzyme function is important to learning about metabolic …

Video: Organization of Life

How is life organized? What is the difference between an organ and an organ system? A community and a population? In this short biology video, we explore the basic organization of life and provide some …

Video: Prokaryotic versus Eukaryotic Cells

Is a cell prokaryotic or eukaryotic? What’s the difference? In this short animation we take a look at the differences, and similarities, between these two types of cells and explore the evolutionary relationship between the …
cancer cells

Starving Cancer Cells to Death

Cancer is basically the inability of the body to control the division of its own cells. This is caused by mutations in the DNA of a cell that causes it to lose its normal identity …
Sodium Channels and Pain Genetics

Sodium Channels and Pain Genetics

Pain is in the brain, or at least the perception of pain occurs in the brain. But actually, what you perceive as pain is the result of a series of chemical and electrical impulses that …
Video: Osmosis and Tonicity

Video: Osmosis and Tonicity

One of the most challenging topics in the first few weeks of an introductory biology course is the concept of osmosis and tonicity. We have designed a new video, “Osmosis and Tonicity” to help students …
cell cycle

What is the link between BRCA1 and cancer?

The announcement that Angelia Jolie has undergone a double mastectomy to reduce her chances of developing breast cancer has many people wondering what  BRCA1 is and how it relates to breast cancer. It is important …
DNA structure

The DNA Hard Drive

A,C, G, and T. Every biology student learns that the information to construct a cell is contained in those four letters, and each corresponds to a chemical nucleotide. These nucleotides contain the information for the …

Mitosis

This one minute 30 second animation outlines the major events that occur in interphase, prophase, metaphase, anaphase and telophase. Download high resolution mp4:  Mitosis