Active and passive transport are biological processes that move oxygen, water and nutrients into cells and remove waste products. Active transport requires chemical energy because it is the movement of biochemicals from areas of lower concentration to areas of higher concentration. On the other hand, passive trasport moves biochemicals from areas of high concentration to areas of low concentration; so it does not require energy. Show
Nội dung chính
Comparison chartActive Transport versus Passive Transport comparison chart
ProcessThere are two types of active transport: primary and secondary. In primary active transport, specialized trans-membrane proteins recognize the presence of a substance that needs to be transported and serve as pumps, powered by the chemical energy ATP, to carry the desired biochemicals across. In secondary active transport, pore-forming proteins form channels in the cell membrane and force the biochemicals across using an electromagnetic gradient. Often, this energy is gained by simultaneously moving another substance down the concentration gradient. Example of primary active transport, where energy from hydrolysis of ATP is directly coupled to the movement of a specific substance across a membrane independent of any other species. There are four main types of passive transport: osmosis, diffusion, facilitated diffusion and filtration. Diffusion is the simple movement of particles through a permeable membrane down a concentration gradient (from a more concentrated solution to a less concentrated solution) until the two solutions are of equal concentration. Facilitated diffusion uses special transport proteins to achieve the same effect. Filtration is the movement of water and solute molecules down the concentration gradient, e.g. in the kidneys, and osmosis is the diffusion of water molecules across a selectively permeable membrane. None of these processes require energy.
Three different mechanisms for passive transport in bilayer membranes. Left: ion channel (through a defined trajectory); center: ionophore/carrier (the transporter physical diffuses through with the ion); right: detergent (non-specific membrane disruption). Video explaining the differencesHere's a good video explaining the process of active and passive transport: ExamplesExamples of active transport include a sodium pump, glucose selection in the intestines, and the uptake of mineral ions by plant roots. Passive transport occurs in the kidneys and the liver, and in the alveoli of the lungs when they exchange oxygen and carbon dioxide. References
Share this comparison: If you read this far, you should follow us: "Active and Passive Transport." Diffen.com. Diffen LLC, n.d. Web. 6 Sep 2022. < > What is the main difference between passive transport and active transport?There are two major ways that molecules can be moved across a membrane, and the distinction has to do with whether or not cell energy is used. Passive mechanisms like diffusion use no energy, while active transport requires energy to get done. Which of the following statements best describes the difference between active transport and passive transport?1 Answer. Passive transport does not require ATP energy to be spent by the cell; active transport involves the cell spending energy to move materials. What is the difference between passive and active transport quizlet?Passive transport doesn't require energy (ATP), active transport does require energy. Passive transport moves molecules WITH the concentration gradient (high to low), while active transport moves molecules AGAINST the concentration gradient (Low to High). Which of the following describes the difference between passive and active transport?Active transport requires energy for the movement of molecules whereas passive transport does not require energy for the movement of molecules. In active transport, the molecules move against the concentration gradient whereas in passive transport, the molecules move along the concentration gradient.
What is the difference between active and passive transport quizlet?Active transport the molecules move from a lower concentration to a higher concentration. Passive transport the molecules move from a higher concentration to the lower concentration.
|