146 resources and 5 collections matched your query.
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Uses microphotography and graphics to examine different kinds of plant and animal cells, discussing their structures and tissues. Defines mitosis and meiosis as forms of cell division and illustrates each. Video has three 5-minute segments for convenience.
(Source: DCMP)
Looks at nerve signals and how they are transmitted. Provides an overview of nerve messages in reflex activities at both the chemical and electrical levels as well as the activities of networks of nerve cells in contact. NOTE: Contains some nudity.
Shows how the brain coordinates functions to make simple but lifesaving decisions. Provides an overview of how the cortex assesses incoming information, sends outgoing messages to the muscles, and stores "maps" of the world and the body. Also outlines how circuits of nerve cells operate in the brain and how individual nerve cells function.
When the nerve cells of squid suffer an injury, something unexpected happens with the tiny pouches of colored pigment, called chromatophores. A MIT scientist discusses this phenomenon, and how it can be used and modeled on the computer with some surprisingly simple rules. Part of the "Science Out Loud" series.
Peoples’ attitudes about marijuana have changed dramatically over the years, but one thing is certain--marijuana changes the way the brain functions. The THC in marijuana enters the lungs, is absorbed into the bloodstream, and enters the brain almost immediately. Viewers will understand the immediate effects of marijuana use on various body systems. This program also discusses the effects of marijuana on attention, memory, and learning. Part of the "Talk It Out" series.
While the human brain and nervous system are wired with hundreds of billions of nerve cells, or neurons, sea slugs can get by with tens of thousands. Ironically, sea slugs reveal a lot about the chemistry of the human brain and nervous system. In fact, they are ideal as study subjects for research on learning, memory, and how neurons control behavior. With support from the National Science Foundation, analytical chemist Jonathan Sweedler and his team at the University of Illinois are working to develop new measurement tools that enable insights into the function of individual cells in the central nervous systems of slugs and other animals in order to uncover novel neurochemical pathways. Part of the National Science Foundation Series “Science Nation.”
Human beings, like every living organism, are driven by two inherent needs: to survive, and ultimately, to reproduce. To accomplish the goals of survival and reproduction, we have inherited bodies crafted by evolution so that every individual human organism is an organic super factory, a living machine made up of systems that process fuel, build products, repair damage, expel waste, and defend against invaders. Introduces the complex physiological systems of the human body: muscular movement, digestion, circulation, respiration, nerves, glands, immunity, and reproduction. Also, illustrates and explains the cellular basis of life and the importance of carbon in organic chemistry.
Presents sensory receptors that depend on contact with the immediate world: taste buds, touch sensors, and olfactory cells. These receptors lie in the skin, the largest organ of the body, which also senses heat, pain, and pressure. Re-creates the complex world of the skin through realistic models and photographs.
Students explore the smallest, but most important units of life: cells. They also gain an understanding of common cell parts through lifelike animations. Additional concepts and terminology include building blocks of life, animal cell, cell membrane, nucleus, cytoplasm, plant cell, photosynthesis, cell wall, chloroplasts, organelles, and role of cells in the body.
Deeply explores the structure of both plant and animal cells. Demonstrates the different types of cells, their components, and their functions
Part of the "Visualizing Cell Processes" series. Includes the following modules: "The Cell Machinery," "A Variety of Cells," "Organic Molecules: The Building Blocks of Life," "Prokaryote Evolution and Diversity," and "Independently Living Eukaryotic Cells."
Introduces cells, how they function, the differences between plant and animal cells, and the various parts of the cell. A quiz is given after each topic.
Part of the "Inside the Living Cell" series. Shows how DNA replicates; how copy errors occur and are subsequently corrected by repair enzymes; and how DNA is compressed into chromosomes, making mitosis and cell division possible. Provides an overview of DNA structure, replicating DNA, mutations that change the genetic code, proofreading and repair, and the stages of mitosis.
Cells differ in size, shape, and function depending on their role in the body. Specialized cells make up tissues, tissues make up organs, and organs make up the systems that work together to make up the body. Join Pinky and Petunia as they discuss some examples of specialized plant and animal cells. Part of "The Amoeba Sisters" series.
Take a look through a microscope at a virus attacking a cell and see the immune system in action. Viruses continue to replicate until they break apart the host cell and start spreading throughout the body, destroying healthy cells along the way. The immune system overpowers a virus with white blood cells and creates the antibodies that kill the same types of viruses quickly if they return.
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.
In this episode, Pinky and Petunia discuss examples of prokaryotes and eukaryotes. They also lead a discussion that compares and contrasts these two types of cells. Part of "The Amoeba Sisters" series.
Military combat, cancer and accidents – all can cause devastating nerve injuries. Sometimes, the body heals on its own. With support from the National Science Foundation, biomedical engineer Christine Schmidt and her team are working to restore nerve function when injuries are more complicated. Surgeons can sometimes move a nerve from one part of a patient’s body to another. Schmidt has developed a method that grafts cadaver tissue onto the damaged area to act as a scaffold for nerves to re-grow themselves.
All living things are made from one or more cells. A cell is the simplest unit of life, and they are responsible for keeping an organism alive and functioning. In this episode, Pinky and Petunia discuss the organelles of cells. Part of "The Amoeba Sisters" series.
Part of the "Inside the Living Cell" series. Illustrates the mechanisms of photosynthesis and cellular respiration. Introduces adenosine triphosphate, or ATP, the universal energy carrier molecules that supply energy-hungry reactions. Also outlines the structure and function of chloroplasts and mitochondria, energy transforming organelles. Overviews ATP and chemical energy, mitochondria, aerobic respiration, chloroplasts, and the reactions of photosynthesis.
Showing collections 1 to 5 of 5
Biology related concepts
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Resources to teach younger students about animals
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