Kleine Moleküle stellen die wesentlichen Bestandteile im Körper bereit, die für die Nährstoffversorgung sowie für die körperliche Entwicklung und Wachstum notwendig sind. Diese Mini Lecture geht den Entdeckungen wie der chemischen Struktur von kleinen Molekülen nach. Dabei stehen insbesondere Vitamine, Hormone und Neurotransmitter im Fokus des Beitrages.

Las moléculas pequeñas sirven como nutrientes que aportan energía y bloques de construcción para el mantenimiento, crecimiento y desarrollo de la ciudad.

Les petites molécules sont les nutriments qui apportent de l’énergie et forment les éléments structurels destinés à l’entretien, à la croissance et au développement de la ville.

Biologists at Arizona State University hope that by learning more about animal behavior, they will also be able to understand why people act the way they do.

If cells and organs never talked to each other, an animal would fall apart faster than a boy band after the popular one goes solo. Thankfully, that’s where the nervous and endocrine systems come in! In this episode of Crash Course Biology, we’ll learn how they use neurons, hormones, and more to keep animals’ bodies coordinated.
Chapters:
Introduction: Internal communication in animals
Why communication matters
The nervous system
What happens when you step on a Lego?
Hormones
Fight or Flight
Review & Credits
Credits

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"G protein-coupled receptors (GPCRs) are key proteins that help transmit extracellular signals into cells. Arrestin molecules help regulate GPCR signaling by recognizing and binding to GPCR residues that have been phosphorylated specifically by the kinase GRK. Two models, the barcode model and the flute model, have been proposed to explain this process. In the barcode model, different protein kinases produce different phosphorylation “barcodes” on GPCRs and arrestins “read” the barcodes produced by GRK to produce certain signaling outcomes. In the flute model, different phosphorylation patterns form different sequences of “notes”. These notes can then be “played” in various ways by the different structural features of arrestins, enabling multiple “songs” (outcomes) to be produced from one set of notes..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

In this video segment from NOVA scienceNOW, meet researchers who are studying obesity and trying to understand the role that hormones and genetics can play in regulating appetite.

Small molecules serve as nutrients and thus provide both energy and building blocks required for the body’s maintenance, growth and development. This Mini Lecture explores the Nobel Prize awarded discoveries and the structural characterization of small molecules such as vitamins, hormones and neurotransmitters.

Students consider human senses and the many everyday human-made sensors so common in their lives. They learn about the three components of biosensors—a special type of sensor—and their functions and importance. With this understanding, students identify various organs in the human body that behave as sensors, such as the pancreas. Using LEGO® MINDSTORMS® NXT robots, provided rbt robot programs and LEGO sensors (light, ultrasonic, sound, touch), students gain first-hand experience with sensors and come to see how engineer-designed sensors play important roles in our daily lives, informing people of their surroundings and ultimately improving our quality of life.

Students explore the physical and psychological effect of stress and tension on human beings. Concepts of stress and stress management are introduced. Students discover how perception serves to fuel a huge industry dedicated to minimizing risk and relieving stress. Students complete a writing activity focused on developing critical thinking skills. Note: The literacy activities for the Mechanics unit are based on physical themes that have broad application to our experience in the world concepts of rhythm, balance, spin, gravity, levity, inertia, momentum, friction, stress and tension.

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Diabetic wounds are a growing problem worldwide. One solution could lie in a hormone secreted by the parathyroid. PTH is critical for re-growing bone. But evidence suggests that it could also help regenerate skin and blood vessels. Researchers recently tested this hypothesis on rats. Applying a synthetic version of PTH to diabetic wounds significantly improved wound healing. But not as they believed it would. Synthetic PTH did not appear to directly activate the cells it repaired. Instead, separate experiments showed that the PTH derivative indirectly led to repair, using exosomes, tiny sacs ejected by cells to communicate with other cells. If replicated in more realistic models of diabetes, these findings could lead to a powerful new way to accelerate wound healing..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

Students learn how the endocrine system works and compare it to the mail delivery system. Students discuss the importance of communication in human body systems and relate that to engineering and astronauts.