https://www.khanacademy.org/science/ap-biology/cell-structure-and-function/cell-compartmentalization-and-its-origins/v/prokaryotic-and-eukaryotic-cells 2022-11-16T04:22:43.7414897Z Prokaryotic and eukaryotic cells Eukaryotic cells contain membrane-bound organelles (such as the nucleus and mitochondria), while prokaryotic cells do not. DNA in eukaryotic cells is found inside the nucleus, while DNA in prokaryotic cells is located in the cytoplasm. Eukaryotic cells are generally larger and more complex than prokaryotic cells. Eukaryotic organisms include animals, plants, fungi, and paramecia. Prokaryotic organisms include bacteria and archaea. video https://cdn.kastatic.org/googleusercontent/JzsKsXQI3JwamHPrup3tPIx1LvFuypJN7IarCsriPalsYSLciMIksgGndNkGHQ8UabCK8NZWSuh6iOMy5ku2oA4s Prokaryotic and eukaryotic cells Eukaryotic cells contain membrane-bound organelles (such as the nucleus and mitochondria), while prokaryotic cells do not. DNA in eukaryotic cells is found inside the nucleus, while DNA in prokaryotic cells is located in the cytoplasm. Eukaryotic cells are generally larger and more complex than prokaryotic cells. Eukaryotic organisms include animals, plants, fungi, and paramecia. Prokaryotic organisms include bacteria and archaea. https://cdn.kastatic.org/ka-youtube-converted/xTnNv7YplSo.mp4/xTnNv7YplSo.mp4 410 The Fundamental Unit of Life https://www.khanacademy.org/science/ap-biology/cell-structure-and-function/cell-structures-and-their-functions/v/organelles-in-eukaryotic-cells 2024-05-06T19:22:43.24334365Z Organelles in eukaryotic cells Eukaryotic cells have membrane-bound organelles. The nucleus stores DNA. The endoplasmic reticulum and Golgi body are involved in protein maturation and transport. Mitochondria generate usable energy for the cell. Chloroplasts carry out photosynthesis. Vacuoles are storage compartments that sequester waste and help maintain water balance. Lysosomes contain enzymes that help break down waste. Sal Khan video https://cdn.kastatic.org/googleusercontent/TIopdlyA73KgbzUEMct36qIj-qAEliwSvP4Qa2ZhubS9JWFzHCzo0gVL1KPmq14QKAONIdR38hQ1kkO2QG-wPnt6 Organelles in eukaryotic cells Eukaryotic cells have membrane-bound organelles. The nucleus stores DNA. The endoplasmic reticulum and Golgi body are involved in protein maturation and transport. Mitochondria generate usable energy for the cell. Chloroplasts carry out photosynthesis. Vacuoles are storage compartments that sequester waste and help maintain water balance. Lysosomes contain enzymes that help break down waste. https://cdn.kastatic.org/ka-youtube-converted/bWPQvxElpLY.mp4/bWPQvxElpLY.mp4 578 The Fundamental Unit of Life https://www.khanacademy.org/science/revision-term-1-ka-science-grade-9/x07cce91f26fedd3c:week-2/x07cce91f26fedd3c:introduction-to-cells/v/endomembrane-system-class-9 2023-01-06T23:01:02.201701884Z Endomembrane system Let's understand the “Endomembrane system” . Khadijatul Qubra video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Endomembrane system Let's understand the “Endomembrane system” . https://cdn.kastatic.org/ka-youtube-converted/9zMvku04wo8.mp4/9zMvku04wo8.mp4 828 The Fundamental Unit of Life https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:cells-and-tissues/xfa1bbeaa3bc88e64:cells/v/mitochondria-plastids 2024-01-16T04:11:35.384208864Z Mitochondria & plastids Let's summarise mitochondria and plastids. Mahesh Shenoy video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Mitochondria & plastids Let's summarise mitochondria and plastids. https://cdn.kastatic.org/ka-youtube-converted/r6J5v0aEkFA.mp4/r6J5v0aEkFA.mp4 187 The Fundamental Unit of Life https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:cells-and-tissues/xfa1bbeaa3bc88e64:cells/e/prokaryotic-and-eukaryotic-cells-in 2026-04-07T22:23:57.656416987Z Prokaryotic and Eukaryotic cells Let's solve some questions! vibhor exercise https://www.khanacademy.org/science/ms-biology/x0c5bb03129646fd6:cells-and-organisms/x0c5bb03129646fd6:cell-parts-and-functions/e/understand-cell-parts-and-functions 2026-04-02T04:15:35.616513959Z Understand: cell parts and functions Check your understanding of cell parts and functions in this set of free practice questions aligned to NGSS standards. Khan Academy exercise https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:cells-and-tissues/xfa1bbeaa3bc88e64:cells/e/parts-of-cell-and-their-functions-in 2026-04-07T23:55:07.30621384Z Parts of cell and their functions Let's solve some questions! vibhor exercise https://www.khanacademy.org/science/revision-term-1-od-grade-9-life-science/x26da6cb4aecf5718:week-2/x26da6cb4aecf5718:introduction-to-cells/v/cell-division 2023-01-18T23:01:01.53525628Z Cell division How do cells divide? Khadijatul Qubra video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Cell division How do cells divide? https://cdn.kastatic.org/ka-youtube-converted/bAB2eqelytc.mp4/bAB2eqelytc.mp4 874 The Fundamental Unit of Life https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:cells-and-tissues/xfa1bbeaa3bc88e64:cells/e/cell-division 2026-03-06T17:50:38.494926415Z Cell Division Let's solve some questions vibhor exercise https://www.khanacademy.org/science/ap-biology/cell-structure-and-function/mechanisms-of-transport-tonicity-and-osmoregulation/v/hypotonic-isotonic-and-hypertonic-solutions-tonicity 2023-09-14T11:22:40.102153098Z Hypotonic, isotonic, and hypertonic solutions (tonicity) Cells react differently in hypotonic, isotonic, and hypertonic solutions. In a hypotonic solution, water rushes into the cell causing it to expand or even burst. In an isotonic solution, there is no net flow of water, keeping the cell stable. In a hypertonic solution, water leaves the cell, causing it to shrivel. These reactions are due to the semipermeable nature of cell membranes and the concentration of solutes. Sal Khan video https://cdn.kastatic.org/googleusercontent/5T4Kl6aMA2bQE3_l4YOlLy_yyW_z5jFkn8pkFNylrj0XdYYE8qift3NyRvstZ1_Tp-p28YkBaMcTehT0LO17SHNB Hypotonic, isotonic, and hypertonic solutions (tonicity) Cells react differently in hypotonic, isotonic, and hypertonic solutions. In a hypotonic solution, water rushes into the cell causing it to expand or even burst. In an isotonic solution, there is no net flow of water, keeping the cell stable. In a hypertonic solution, water leaves the cell, causing it to shrivel. These reactions are due to the semipermeable nature of cell membranes and the concentration of solutes. https://cdn.kastatic.org/ka-youtube-converted/afWnU10ZNfg.mp4/afWnU10ZNfg.mp4 390 The Fundamental Unit of Life https://www.khanacademy.org/science/bridge-course-class-11th-biology/xfa1bbeaa3bc88e64:cells-and-tissues/xfa1bbeaa3bc88e64:cells/e/osmosis-and-diffusion 2026-03-06T17:50:38.494926415Z Osmosis and Diffusion Let's solve some questions! vibhor exercise