Simple diffusion can only move material in the direction of a concentration gradient; facilitated diffusion moves materials with and against a concentration gradient. Facilitated diffusion is a type of passive transport. 300. The speed of facilitated diffusion is relatively higher. For example, the sodium gated channels of a nerve cell are stimulated by a chemical signal which causes them to open and allow sodium ions into the cell. Energy (ATP) 300. Diffusion is the equaling of a concentration of a substance in a certain medium. Facilitated diffusion through the cell membrane. 14. Facilitated diffusion is one of the many types of passive transport. Channel proteins, gated channel proteins, and carrier proteins are three types of transport proteins that are involved in facilitated diffusion. Facilitated diffusion is also a passive transport mechanism that doesn’t require any energy, but some facilitated diffusion processes can be active. Carrier proteins "carry" the ion or molecule across the membrane by changing shape after the binding of the ion or molecule. 300. No energy is required because a simple diffusion is a passive transport mechanism. Facilitated diffusion. Asked 69 days ago|9/24/2020 1:22:40 AM. When you are exercising, your muscle cells use... How do transport proteins become saturated? from higher to lower concentrations), chemical energy is not directly required. 1 Answer/Comment. Does facilitated diffusion require the cell to expend energy to move substances? Even though facilitated diffusion involves transport proteins, it is still passive transport because the solute is moving down the concentration gradient. Simple diffusion can only move material in the direction of a concentration gradient; facilitated diffusion moves materials with and against a concentration gradient. They may be too big, have too much of an electrical charge, or be in scarce supply. Give three examples. Search for an answer or ask Weegy. What is one of the questions no one likes to be asked? 300. Is facilitated diffusion passive or active ... Lower temperatures decrease the energy of the molecules, thus decreasing the rate of diffusion. New answers. larger. High Concentration Low Concentration 2. Endocytosis. Facilitated diffusion may or may not require energy from ATP. Ion channels allow the formation of a concentration gradient between the extracellular fluid and the cytosol. NO (What is ATP?) Ions such as sodium (Na+), potassium (K+), calcium (Ca2+), and chloride (Cl-), are important for many cell functions. Carrier proteins are involved in passive and active transport. Active Transport in Cells: Definition & Examples, Receptor-Mediated Endocytosis: Definition & Example, Endocytosis and Exocytosis Across the Cell Membrane, Passive Transport in Cells: Simple and Facilitated Diffusion & Osmosis, The Fluid Mosaic Model of the Cell Membrane, Polar Body: Definition, Formation & Twinning, Endocytosis: Definition, Types & Examples, Importance of Carbohydrates in the Cell Membrane, Glycoprotein Function in the Cell Membrane, Peripheral Proteins: Definition & Function, General Studies Earth & Space Science: Help & Review, General Studies Health Science: Help & Review, Human Anatomy & Physiology: Help and Review, CSET Science Subtest I - General Science (215): Practice & Study Guide, UExcel Anatomy & Physiology: Study Guide & Test Prep, Introduction to Environmental Science: Help and Review, Middle School Life Science: Homework Help Resource, Middle School Life Science: Tutoring Solution, Biological and Biomedical Gated ion channels can open or close in response to different types of stimuli, such as electrical or chemical signals. Answer to: Does facilitated diffusion require the cell to expend energy to move substances? form of facilitated transport involving the passive movement of molecules along their concentration gradient What is a transport protein? True or False. This process is called passive transport or facilitated diffusion, and does not require energy. Rating. In living systems, the lipidbased membrane creates compartments which allow the transp… For example, water gets through the … Small nonpolar molecules can easily diffuse across the cell membrane. Ion channel proteins allow ions to diffuse across the membrane. Small nonpolar molecules can easily diffuse across the cell membrane. What drives facilitated diffusion, just like the ot… Facilitated diffusion is the passive movement of molecules along the concentration gradient. The stimulus may be chemical or electrical signals, temperature, or mechanical force, depending on the type of gated channel. 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does facilitated diffusion require energy

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