Osmosis is a specific type of diffusion; it is the passage of water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration.

Various types of cell transport are summarized in the concept map in Figure \(\PageIndex{2}\). When the voltage across the membrane changes, the voltage-gated sodium channels open and allow flow of sodium ions into the cell which cause depolarization phase of action potential and outflow of potassium through voltage-gated potassium channel brings about repolarisation. True or False. It goes by itself without any input of extra energy. A uniporter carries one specific ion or molecule. It is a reverse pinocytosis where substances synthesized within the secretory cells are secreted out of the cell. Energy in the form of phosphoenolpyruvate (PEP) provides a phosphate group that is transferred to incoming sugars, such as glucose. Is It the Flu, Stomach Flu, or Traveler’s Diarrhea? 18 differences between active transport and passive transport, 19 Differences between Active Immunity and Passive Immunity, Active Immunization- Advantages and Drawbacks, Linkage- Characteristics, Types and Significance, Glycolysis- Steps, ATP generation and Significance, Gluconeogenesis- Steps, Reactions and Significance, Enzymes- Properties, Classification and Significance, Prokaryotic DNA Replication- Enzymes, Steps and Significance, Mutation- Causes, Mechanisms, Agents and Significance, Bacterial growth curve and its significance, Collection and transport of stool specimens, Electron Transport Chain (ETC)- Components and Steps, Prokaryotic Transcription- Enzymes, Steps, Significance, Eukaryotic DNA Replication- Features, Enzymes, Process, Significance, Streak Plate Method- Principle, Methods, Significance, Limitations, Milk Pasteurization- Methods, Steps, Significance, Comparative Embryology- Principle, Significance, Drosophila Development- Stages, Significance, Implantation- Process, Events, Significance, Electron transport chain- definition, components, steps & FAQs, Viral Transport Media (VTM)- Principle, Preparation, Uses, Limitations, https://biologydictionary.net/active-transport/, https://courses.lumenlearning.com/suny-biology1/chapter/active-transport/, https://www.ck12.org/c/life-science/active-transport/lesson/Active-Transport-MS-LS/, https://www.khanacademy.org/test-prep/mcat/cells/transport-across-a-cell-membrane/a/passive-transport-and-active-transport-across-a-cell-membrane-article, https://www.sciencedirect.com/topics/neuroscience/membrane-transport, https://www.sciencedirect.com/topics/neuroscience/active-transport, https://courses.lumenlearning.com/austincc-ap1/chapter/active-transport/. There are two basic ways that substances can cross the plasma membrane: passive transport, which requires no energy; and active transport, which requires energy.