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Figure 2.27 (OpenStax, Biology 2e) caption: These functional groups are in many different biological molecules. R, also known as R-group, is an abbreviation for any group in which a carbon or hydrogen atom is attached to the rest of the molecule.
(Source: OpenStax)
One-third of Costa Rica's land is designated as national parks. One park is home to the capuchin, howler, and spider monkeys, each an endangered species. The three groups have distinct similarities and differences in their habitats, diets, characteristics, and social structures. As scientists study the roles and functions of the female monkeys, they remain fascinated by these animals that are so similar to humans. NOTE: One brief mating scene.
(Source: DCMP)
Tongue taste areas The tongue is a muscular organ in the mouth of most vertebrates that manipulates food for mastication, and is used in the act of swallowing. It is of importance in the digestive system and is the primary organ of taste in the gustatory system. The tongue's upper surface (dorsum) is covered in taste buds housed in numerous lingual papillae. It is sensitive and kept moist by saliva, and is richly supplied with nerves and blood vessels. The tongue also serves as a natural means of cleaning the teeth. A major function of the tongue is the enabling of speech in humans and vocalization in other animals. The human tongue is divided into two parts, an oral part at the front and a pharyngeal part at the back. The left and right sides are also separated along most of its length by a vertical section of fibrous tissue (the lingual septum) that results in a groove, the median sulcus on the tongue's surface. There are two groups of muscles of the tongue. The four intrinsic muscles alter the shape of the tongue and are not attached to bone. The four paired extrinsic muscles change the position of the tongue and are anchored to bone. Do you have good taste? In this video segment, Dr. Linda Bartoshuk explores the sense of taste in humans - why we have it, and what happens when we lose it. Learn why the sense of smell is also important to our experience of food. Footage from NOVA: "Mystery of the Senses: Taste".
Goliath groupers are the largest of the groupers in the Atlantic basin. They were once so overfished in the Southeastern United States, they were considered for listing under the Endangered Species Act. Thankfully, a dedicated group of marine scientists worked to prompt NOAA to ban all of their harvest. This action in the early 1990s gave the grouper time to recover and gave scientists time to learn more about this fish.
There are millions of different kinds of living things on the planet. Grouping them is not an easy task. This video explores this process and investigates some of the major groups of living things.
This video outlines the complementary nature between structure and function. Students will observe specific animals that have structures geared towards a particular function. Topics covered include the structures and processes animals use involved in breathing, eating, passing waste, and moving. Part of the "Biology" series.
Investigates the major body systems that are important during physical activity: the skeletal, muscular, cardiovascular, respiratory, and nervous systems. Examines each of these systems, their parts, their functions, and how they work. Also, explores the contribution and interaction of the systems when we exercise and while we are rest.
Functional electrical stimulation technology (FES) is designed to interface technology with muscles and nerves in an attempt to restore some level of function for people with central nervous system disabilities. Visits several experimental programs that are using implanted electrodes, controlled by external computer devices, to enable people with spinal cord injuries to stand, transfer, and, under controlled conditions, even walk.
The hummingbird has a forked tongue that is lined with hair-like extensions. Its design is especially useful for drinking nectar from flowers.
Details the anatomy of the honeybee. Also details the roles of drones, worker bees, the queen, and the mystery of the honeybees' dance. Follows the Colony Collapse Disorder (CCD) problem to a variety of laboratories, investigating the pathology of bee diseases that are wiping out entire colonies and affecting our food supply. Concludes with the discovery that a viral infection is the most likely cause of CCD but warns that bees are subject to many other stresses that can upset the ecological balance and wipe out our supplies of fruits and vegetables.
Investigates the physical features of a number of "ugly" animals to demonstrate the efficiency of their odd appendages or disproportionate body parts. Studies the nose of the star-nosed mole, the fleshy protuberances in the mouth of the snapping turtle, the warthog's warts and tusks, the vulture's head, the northern elephant seal's proboscis, the proboscis monkey's nose and protruding stomach, the naked mole rat's lack of hair or fur, the whip scorpion's alien appearance, the mouths of deep sea denizens, and the bat's head.
With support from the National Science Foundation's Directorate for Social, Behavioral, and Economic Sciences, psychologist Brad Duchaine and his team are studying the brains of 20 people with "face blindness." The team hopes to better understand the computational and neural basis of face processing in general. The research will help scientists develop a classification system for the condition and advance understanding of how different face-processing abilities are organized in the brain. Part of the "Science Nation" series.
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.
Research in biology would be impossible without a common framework for grouping and distinguishing species. Carl Linnaeus was the first to propose a classification system of organisms. His system developed into the organizational structure used in the life sciences today. Viewers also learn how new scientific names are created and how the existing system has been further refined using DNA studies.
Shows the crucial part water plays in the body's functioning and the system for keeping it in balance. Drinking, sweating, and breathing are covered. The urinary tract is analyzed in detail, with particular attention to the functioning of the kidneys.
Engineers are motivated to improve our quality of life, and they typically develop new products to achieve this goal. They use several steps in developing new products: design phase, testing phase, and production and maintenance phase. During the design phase, engineers specify the functional requirements of the product. They also produce a prototype to evaluate its overall effectiveness. They also consider cost, reliability, and safety. During the last two phases, engineers determine if any failures of the components are likely and where they occur. In these processes, engineers use computers to create designs, analyze functionality, and simulate how a machine, structure, or system operates.
Engineers and architects are creating bridges that combine the best of both art and design. Bridges are no longer just a tool to get from one side of the river to the other. Some bridges have the goal of being aesthetically pleasing and efficient for pedestrians. Others rely on the cantilever design to span a distance equivalent to three and a half jumbo jets. Bridges are often classified by their structure and how the forces of tension, compression, bending, torsion and shear are distributed. Shows how designs vary depending on the function of the bridge, the environmental factors, the materials, and technology used to construct them.
Showing collections 1 to 7 of 7
A collection of Chemistry related resources
A collection containing 67 resources, curated by Benetech
Biology related concepts
A collection containing 59 resources, curated by Benetech
Resources to teach younger students about animals
A collection containing 58 resources, curated by DIAGRAM Center
Collection of anatomy resources
A collection containing 21 resources, curated by Benetech
Resources related to vision
A collection containing 12 resources, curated by Charles LaPierre
A collection of simulations from PhET.
A collection containing 15 resources, curated by Charles LaPierre
3D models and images of the entire periodic table of elements
A collection containing 118 resources, curated by Library Lyna
