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Enzymes are proteins which are manufactured by the human body during the process of protein synthesis. They are catalysts that drive every chemical reaction taking place in the human body, and they enable the human body to be built from proteins, carbohydrates, and fats. Enzymes are highly specific in their activity and form an enzyme-substrate complex speeding up processes as they lower the activation energy during a given reaction period. Through genetic engineering and by isolating specific enzymes, it has become possible to harness the power of enzymes.
(Source: DCMP)
Part of the "Visualizing Cell Processes" series. Includes the following modules: "The Protein Nature of Life," "Protein Structure," "Transcription," "Translation and Protein Synthesis," "Gene Regulation in Prokaryotes," "Classes of Eukaryote DNA," "Exons and Introns," "Mutations," and "Renegade DNA: The Viruses."
Host Alex Dainis discusses GFP (Green Fluorescent Protein), and its importance in scientific studies. GFP is a green fluorescent protein found in jellyfish. Scientists use GFP in biology to mark particular genes in various experiments, and it provides a direct look into the inner workings of cells.
Proteins are the workhorses of cells. With support from the National Science Foundation, University of Arkansas biochemist James Hinton has been researching their structure and function for decades. Back in the 1990’s, he had a vision to study these huge protein structures in 3D and now, in cooperation with a company called Virtalis, his vision has become a reality. The new system allows researchers to enlarge the visual of a protein to room-size, so they can examine it from all angles, to better understand its structure and function. The new 3D visuals are also helping Hinton realize his other vision to better engage students in his discoveries and science in general.
With support from the National Science Foundation, chemist Kent Kirshenbaum and his team at New York University are engineering molecules to mimic the shapes, structures, and functions of natural proteins. The ultimate goal of this biomimetic chemistry research is to develop a reliable way to build synthetic proteins that can be put to work at the industrial scale. Part of the "Science Nation" series.
Viruses are tiny agents that can infect a variety of living organisms, including bacteria, plants, and animals. The Dengue virus is a mosquito-borne viral disease occurring in tropical and subtropical areas. Scientists at the University of California, Berkley have identified a key culprit responsible for the severe symptoms related to Dengue fever.
Part of the "Inside the Living Cell" series. Illustrates how genetic instructions carried on DNA are transcribed into RNA, leading to the production of specific enzymes that control the thousands of biochemical processes occurring in living cells. Provides an overview of the protein basis of life, enzymatic reactions, amino acids and DNA, how proteins are built, and gene activation.
For centuries, silkworms have been breed to produce strong, fashionable silk threads. Today, the silk industry has joined forces with the biotechnology industry. Researchers are creating genetically modified worms which a produce a protein that aids in clotting blood. Researchers are looking to maybe one day use the protein in medical procedures.
Does snot have a purpose other than being gross? It turns out, it’s a pretty awesome material with many benefits for the human body. A biological engineer at MIT explains the usefulness of snot. Part of the "Science Out Loud" series.
Part of the "Visualizing Cell Processes" series. Includes the following modules: "Behavior of the Plasma Membrane," "Osmosis," "Transport Proteins," "Phagocytosis," "Pinocytosis," "Receptor Mediated Endocytosis," "Golgi Function," "Lysosomes and Digestion," "Microtubules," "Cilia," and "Actin and Myosin Motor Proteins."
Researchers Randy Jirtle and Rob Waterland work with agouti yellow mice to study the implications for cloning, nutrition, and disease research. Their research has been called one of the most important studies of the 21st century. It is hugely significant for understanding the relationship between genes and the environment.
Part of the "Inside the Living Cell" series. Describes the properties of the plasma membrane, how it governs the kinds of molecules that go in and out of cells, and how cells feed by engulfing (phagocytosis) and drinking in (pinocytosis) fluids. Also reviews membrane structure, osmosis, transport proteins, active transport, cell eating, cell drinking, and receptor proteins.
Honey bees make honey from nectar to fuel their flight. They also need pollen for protein. So they trap, brush, and pack it into baskets on their legs to make a special food called bee bread. Part of the "Deep Look" series.
Deeply explores the structure of both plant and animal cells. Demonstrates the different types of cells, their components, and their functions
Go behind the scenes with Angelina and investigate the equipment and engineering skills needed to recreate ocean habitats. Explore a typical workspace of an aquarium and get a feel for the everyday problem solving skills needed as an aquarist. Part of the "Aquarist" series.
Covid-19 image, 3D model with accompanying video exploration of the 3D model.
(Source: North Carolina Central University)
Part of the "Chemistry in Action" series. Chemicals interacting with each other are one of the most fascinating topics in chemistry. Fireworks, burning flares, and rusting all illustrate chemical reactions. Describes the different types of reactions as well as the process of balancing chemical equations. Introduces the following terminology: chemical equations, Law of Conservation of Mass, decomposition and synthesis reactions, replacement reactions, and reaction rates.
They are a staple of the Western diet and a great source of protein. Hamburgers are also a potential breeding ground of E. coli and a receptor of dangerous carcinogens. This episode looks at hamburger production, from cattle breeding and butchering methods, to cooking on the barbecue. Part of the "Science to Go With Dr. Joe Schwarcz" series.
Part of the "Visualizing Cell Processes" series. Includes the following modules on photosynthesis: "Chloroplast Structure," "Light Trapping by Chlorophyll," "Light–Dependent Reactions of Photosynthesis," and "The Light–Independent Reactions of Photosynthesis." Includes the following modules on cellular respiration: "Glycolysis and Fermentation," "Mitochondrion Structure," "Aerobic Respiration," "Krebs Cycle," "Electron Transport Chain," and "ATP synthesis."
People say insects are the food of the future. They’re more environmentally sustainable and more humane than other sources of animal protein. Can eating insects really catch on in Western diets? In this episode, host Joe Hanson tries a variety of foods made from insects and along the way learns that eating bugs isn’t really that new for humans. Part of the "It's Okay to Be Smart" series.
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Biology related concepts
A collection containing 59 resources, curated by Benetech
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
