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The cell cycle is a series of developmental and growth events that chart the normal life of a cell. This program uses easy-to-follow animation to illustrate the growth phases of the cell cycle and the processes of mitosis and cytokinesis that follow. The distinct phases of mitosis-including prophase, metaphase, anaphase and telophase-are described in detail. The program also explains meiosis, a variation of mitosis involving the formation of gametes in two stages. Apoptosis, or programmed cell death, is also covered, including the effects of uncontrolled cell division (cancer).
All living organisms need energy to perform day-to-day tasks. Using straightforward, vibrant animation to anchor otherwise complex ideas, this program shows how that energy is created through the metabolic processes of catabolism, aerobic cellular respiration, and anabolism. Respiration is covered in depth, with detailed explanations of glycolysis, the Krebs cycle and the electron transport chain. Also covered is fermentation and anaerobic cellular respiration, and how cells help build large, complex molecules through the process of anabolism.
This program explores the basic structure of both animal and plant cells and the specific functions that different cell components serve. After an overview of a complete cell, individual segments dive in to detail each of the specific parts. Discrete, pedagogical segments cover: the plasma membrane, extracellular matrix, flagellum and cilia, the nucleus, nucleolus, nuclear envelope, cytosol and cytoplasm, the rough and smooth endoplasmic reticula, the golgi apparatus, ribosomes, lysosomes, vacuoles, peroxisome, and mitochondria. Where plant and animal cells different is made clear, and separate segments on structures unique to plants include the cell wall, plasmodesmata, and chloroplasts.
That a tiny collection of cells can divide, multiply, and transform into the proper combination of lung cells, brain cells, bone, muscle, and more-eventually becoming a fully formed human being-is often referred to as the miracle of life. But at the cellular level, this is the story of stem cells, cellular differentiation, and gene expression. This program explores these topics, detailing the different types of stem cells (embryonic and adult), and when they leave the cell cycle to enter differentiation. Cell mutation, gene expression, and the process of epigenetics are also covered. Stem cell potency is also reviewed, as is the role and promise of stem cells in medical research, including the pros and cons of using embryonic versus adult-derived stem cells.
This program discusses plasma membrane structure; characteristics of prokaryotic cells and their structures; characteristics of eukaryotic cells and their structures; contrasting plant and animal cells; defines solutions; and discusses diffusion, osmosis, and dialysis.
This program introduces energetics with a discussion of the laws of energy; structure and characteristics of ATP; exergonic and endergonic reactions; the flow of energy through nature including fusion, the electromagnetic spectrum, photosynthesis and the cellular oxidation of glucose, producers and consumers, food chains and food webs; ecological roles of organisms in the food web; energy pyramids; and contrasting matter recycling with energy flow. Portions of energy metabolism are talked about to lay a foundation for the discussion of photosynthesis and the cellular oxidation of glucose in later programs in this series. The program also takes a detailed look at the light and dark reactions of photosynthesis. In addition, the following topics are discussed:
oxidation and reduction reactions
the electron carriers NAD+, FAD, and NADP+ and their reduced versions
enzymatic pathways and cycles
substrate level phosphorylation
chemiosmotic/oxidative phosphorylation looking at electron transport systems and ATP synthase functioning in detail
photosystems
chloroplast structure
photosystems, accessory pigments, and resonance transfer
initiation of photosynthesis and the role of chlorophyll-a and water
photosystem II and photosystem I
ATP production
the Calvin cycle
the role of glucose
guard cells, stomata, and carbon dioxide
C4 and CAM plants
glycolysis and cellular respiration
aerobic and anaerobic glycolysis
mitochondrial structure and electron transport system
pyruvate to acetyl CoA
Kreb's Cycle
the role of oxygen
the metabolic relationship between carbohydrates, proteins and lipids
the major biogeochemical cycles: nitrogen, phosphorus, carbon-oxygen, and water cycles
This program examines elk and bison management including Brucellosis before considering the rest of the ecosystem Artiodactyla, including rocky mountain big horn sheep, moose, and pronghorn; then follows with a discussion of Carnivora, beginning with grizzly bears.
Energetics: Pieces of the Energy Puzzle looks at portions of energy metabolism to lay a foundation for the discussion of photosynthesis and the cellular oxidation of glucose.
This program covers the following topics:
the electron carriers NAD+, FAD, and NADP+ and their reduced versions
oxidation and reduction reactions
enzymatic pathways and cycles
substrate level phosphorylation
photosystems
chemiosmotic/oxidative phosphorylation looking at electron transport systems and ATP synthase functioning in detail
The Cellular Oxidation of Glucose revisits C4 and CAM plants before beginning a detailed look at glycolysis and cellular respiration. This program covers the following topics:
aerobic and anaerobic glycolysis
mitochondrial structure
pyruvate to acetyl CoA
Kreb's Cycle
mitochondrial electron transport system
ATP production
the role of oxygen
the metabolic relationship between carbohydrates, proteins, and lipids
Biochemistry DVD begins by describing the basic structure of atoms and how ions are formed as atoms gain or lose electrons. Molecules and the covalent bonds that hold them together are then investigated. The program then explains the difference between organic and inorganic molecules, polar and non-polar molecules and how the hydrogen bonds that form between polar H2O molecules provide water with a number of unique characteristics critical to life. A look at the concept of pH and the role of buffers concludes the program.
Biochemistry DVD starts by explaining how polymers are synthesized out of smaller monomers through dehydration reactions that release H2O molecules in the process. The program goes on to look at the role of carbohydrates in energy storage and as structural building blocks; the use of lipids in synthesizing plasma membranes, fats and steroid hormones; proteins in their role as enzymes, hormones, and structural materials; and nucleic acids use in storing information and transferring energy.
Cell Membranes DVD begins by examining cell wall structure and the major functions of cellular membranes before introducing the fluid mosaic model of the phospholipid bilayer, and transport, recognition, and receptor proteins. The concepts of simple and facilitated diffusion, passive and active transport, and osmosis are illustrated. Endocytosis and exocytosis, the role of contractile and central vacuoles, and how desmosomes and tight junctions tie cells together and how plasmodesmata and gap junctions facilitate communication are explained.
Cell Structure DVD first explains the difference between prokaryotic and eukaryotic cells and then explores in detail the structure and function of the major organelles found in eukaryotic cells. Examined organelles include: the nucleus, ribosomes, smooth and rough endoplasmic reticulum, the Golgi complex, lysosomes, chloroplasts, mitochondria, plastids, contractile and central vacuoles, cilia, flagella and the microtubules, microfilaments, and intermediate filaments that make up the cytoskeleton. The program concludes by looking at how cellular shape varies with cellular function.
Glycolysis and Cellular Respiration DVD looks first at the processes of glycolysis and fermentation the program then looks in detail at cellular respiration beginning with the structure of mitochondria. Following the entry of pyruvic acid into the mitochondrial matrix and the formation of acetyl CoA the program continues with an in-depth examination of the citric acid cycle. An exploration of the endosymbiotic hypothesis which offers an explanation of how photosynthesis and cellular respiration arose in eukaryotic cells concludes the program.
Photosynthesis DVD documents how scientists unraveled the mystery of photosynthesis and then examines the structural adaptations in leaves that facilitate photosynthesis, the nature of visible light, and the structure of chloroplasts before going on to explain how the light dependent reactions that occur in photosystems I and II produce ATP and other high energy molecules that are then used to produce glucose via the light independent C3 and C4 cycles which are compared and contrasted to one another.
Take your students inside James Thomson's laboratory at the University of Wisconsin where stem cells were first cultured to learn why this breakthrough is so important in the 21st century. This new video will help you show your students what stem cells are, how they are cultured, why they offer such potential for the future of our health and welfare. The program addresses both the science and the ethical dilemmas that accompany this advance in biology. Includes interviews with pioneers in stem cell technology and in stem cell ethics.
It's time to investigate your inner real estate: your cells. You consist of over 75 trillion cells and the product will show you what they're like. You'll uncover the mysteries of DNA and crack the genetic codes inside of each and every one of us.
Can you say "semi-permeable'" Your cell membrane sure can. The program will show you why the cell membrane is one of the most important parts of the cell and how it's responsible for functions like active and passive transport, phagocytosis (cellular eating) and pinocytosis (cellular drinking).
This video uses microscope imaging and 3-D animation techniques to illustrate the cellular processes associated with being alive: eating, drinking, breathing and growing.