Significant figures are a way of showing the precision of a number or group of numbers. Significant figures are important because they tell us how good the data we are using are. Significant figures are critical when reporting scientific data because they give the reader an idea of how well you could actually measure/report your data.

The spectrophotometer is an instrument used to measure the effect of a sample on a beam of light. We can learn a lot about a substance by studying the way it interacts with light. In this video, we'll demonstrate how to use a spectrophotometer to perform a basic experiment: determining the absorbance spectrum of red food coloring. Included in the video is a short animation that illustrates the inner workings of a spectrophotometer.

This interactive lesson covers the basics of Spectrophotometry including: a general overview of spectrophotometry, operation of a spectrophotometer, basic components, and common safety considerations.

Sterile Gowning Procedures is a serious game that teaches the steps for proper sterile gowning and gloving.

As cultured cells grow and divide, they use up nutrients and eventually, cells will multiply to a point that they run out of space in the culture vessel. Subculturing is the process of diluting and transferring the cells into more vessels with fresh culture medium so we can produce a new culture and the cells can continue growing. In this video, we demonstrate the steps for propagating a culture by transferring NIH3T3 cells from a previous culture to a new culture vessel.

Tangential Flow Filtration is used to concentrate and diafilter the GFP product stream. We're going to pump a fluid through and across a special type of filter known as an ultrafiltration membrane. The size of the pores in the filter material determines what passes through and what's held back. The solution that passes through the membrane is referred to as the permeate. Because the pores of the ultrafiltration membrane are small enough to keep the product from passing through, the permeate contains no product and is sent to waste. The portion of the feed stream that does not permeate the membrane is called the retentate. It contains the retained product and is the stream we are most interested in. What makes TFF different is a core technology that enables it to be faster, more efficient, more flexible and even self-cleaning. In conventional filtration, a fluid is propelled directly into a filter. The particles within the stream that can't fit through the pores of the filter build up at the filter surface, eventually clogging it. With TFF, the stream moves across the filter – that is, tangential to the filter - instead of directly at it. The cross-flow current actually picks material back out of the filter media or membrane and into the stream. This retained material – called retentate – is recirculated to the supply tank and will continue to loop through the filter for as long as the process runs.

This demonstration video is a great beginner's guide to using micropipettes in the life science laboratory. Our lab instructor explains the proper techniques required to use a micropipette.

The "Experiments in Biotechnology" video series is a production of NCCCS BioNetwork in partnership with Haywood and Western Piedmont Community Colleges and features demonstrations of 8 laboratory experiments.

This video demonstration illustrates the transformation of E. coli cells with the pUCA plasmid.

Serological pipettes are used for measuring and transferring volumes of solution. Your technique must be exact to ensure accurate measurements and to avoid introducing contamination. In this video, we'll demonstrate proper handling of pipettes, how to read the meniscus, and how to use both scales when measuring and transferring solution.

Now that you know what CPT is, it's time to learn how to use it. This course dives deeper into the principles and organization of these procedure codes. However, this course is merely an introduction to the practice, and some of the examples that we'll use are simplified for ease of understanding.

Using ICD-10-CM is a lot like using ICD-9-CM, with a few significant differences. Using our guide to ICD-9-CM as a base, this video will show you how to use ICD-10-CM code set accurately and efficiently.

In this short eLearning course, you'll learn the fundamentals of process and equipment validation in the manufacture of pharmaceuticals. Explore the history of validation, what validation means, what must be validated, and when it must be validated.

BioNetwork's Virtual Microscope is the first fully interactive 3D scope - it's a great practice tool to prepare you for working in a science lab. Learn terminology, usage, and care by interacting with a fully functional, virtual microscope. When you're ready, challenge your knowledge in the testing section to see what you've learned.

The business of growing grapes and making wine has blossomed into one of the most exciting and profitable industries in North Carolina. The science of viticulture and enology will be examined, and a virtual lesson on how wine is made will be presented. The North Carolina Community College System is preparing workers to fill the need for the growing winemaking business in our state. Faculty from Robeson Community College, James Sprunt Community College, and Surry Community College will explain just how their programs are satisfying this need for these well trained workers from the mountains to the coast in an effort to make this growing business one can "toast" around the world. Panelists: Greg Smith, Jeffrey McPherson, Dennis Sutton, Gill Giese

A serene college campus in western North Carolina has a dark secret. A government research project has gone terribly wrong.

A nurse. A police officer. An electrical engineer. From the cars we drive to the planes we fly. Our food and our water. Technology and medicine. All of these important aspects in the lives of North Carolinians are powered by NC Community Colleges.

The AAPC's Certified Professional Coder (CPC) exam is currently the gold standard of coding certifications. Let's take a look at this certification exam now.

This whip grafting demonstration was originally presented at the Plant Grafting Workshop hosted at Wilkes Community College in April 2009. In this video, Jonah Parker demonstrates how to perform a whip graft and shares his personal experience of grafting apple trees.