Khan Academy
WEBIf you're seeing this message, it means we're having trouble loading external resources on our website. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.
G Protein Coupled Receptors (video) | Khan Academy
WEBG-protein coupled receptors (GPCRs) are a large, diverse group of membrane receptors in eukaryotes that respond to a wide range of external signals. When a ligand binds to a GPCR, it triggers a complex chain of events involving G-proteins and second messengers, influencing various cell functions.
Khan Academy
WEBSe você está vendo esta mensagem, significa que estamos tendo problemas para carregar recursos externos em nosso website. Se você está atrás de um filtro da Web, certifique-se que os domínios *.kastatic.org e *.kasandbox.org estão desbloqueados.
Unit 4: Cell communication and cell cycle - Khan Academy
WEBPick up the intracellular receptor: it's for you! Learn. G Protein Coupled Receptors (Opens a modal) Signal relay pathways (Opens a modal) Example of a signal transduction pathway (Opens a modal) Activation and inhibition of signal transduction pathways (Opens a …
Response to a signal (article) - Khan Academy
WEBSignals (a.k.a. ligands) and receptors come in many varieties, and binding can trigger a wide range of signal relay cascades inside the cell, from short and simple to long and complex. Despite these differences, signaling pathways share a common goal: to produce some kind of cellular response.
Khan Academy
WEBLearn about the mechanisms of cell signaling in this Khan Academy biology lesson.
Khan Academy
WEBHow a sodium potassium pump can maintain a voltage gradient across a cell or neuron's membrane. The sodium-potassium pump goes through cycles of shape changes to help maintain a negative membrane potential. In each cycle, three sodium ions exit the cell, while two potassium ions enter the cell. These ions travel against the concentration gradient, so this process requires ATP.
Official Digital SAT® Prep - Khan Academy
WEBCourse summary. Digital SAT Math. Digital SAT Reading and Writing. Digital SAT Math. About the digital SAT: Digital SAT Math Foundations: Algebra: Digital SAT Math Foundations: Problem solving and data analysis: Digital SAT Math Foundations: Advanced math: Digital SAT Math Foundations: Geometry and trigonometry: Digital SAT Math Medium: Algebra ...
Khan Academy
WEBBiblioteca de Biologia. Curso: Biblioteca de Biologia > Unidade 15. Lição 4: Regulação do ciclo celular, câncer e células-tronco. Pontos de checagem do ciclo celular. Reguladores do ciclo celular. Câncer. Câncer e o ciclo celular. Regulação do ciclo celular. Apoptose.
Khan Academy
WEBKorzystasz z Khan Academy w języku polskim? Przekaż 1% podatku lub darowiznę Fundacji Edukacja dla Przyszłości, która zajmuje się tłumaczeniem Khan Academy na język polski, edukacjaprzyszlosci.pl. Przekaż darowiznę dla Khan Academy Foundation, wesprzyj polskie tłumaczenie przekazując datek na edukacjaprzyszlosci.pl, lub wesprzyj nas jako wolontariusz/ka już dzisiaj!