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The endomembrane system in eukaryotic cells includes cell membrane, nuclear envelope, endoplasmic reticulum, Golgi apparatus, vesicles, vacuoles, and lysosomes.

Nossa missão é oferecer uma educação gratuita e de alta qualidade para qualquer pessoa, em qualquer lugar.

Khan Academy

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Hoppá. Hiba történt. Kérjük, próbáld újra. Hoppá, úgy tűnik, hibába ütköztünk. Ajánljuk, hogy frissítsd az oldalt. Ha ez a probléma továbbra is ...

Мисията ни е да дадем на всеки и навсякъде безплатно образование на световно ниво.

Comprueba tu comprensión de los diagramas de Lewis en este conjunto de preguntas abiertas de práctica diseñadas para estudiantes de Química AP.

Misyonumuz herkese, her yerde, dünya standartlarında ve ücretsiz eğitim imkanı sağlamaktır.

As a nonprofit organization, we measure our success as an organization based on the impact we make on student learning. Everything we do is held to this standard: if it won’t have an equitable and positive impact on students or the educators guiding their learning, it’s not for Khan Academy.