Select all CORRECT answer choices regarding the following question: "Which of the following are means by which bacteria bring food into their cells?" Active transport Passive diffusion PTS Facilitated diffusion
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- Compare and contrast the following methods of a passing cell membrane in terms of movement with respect to the concentration gradient, use of ATP, and the use of transporters with examples. (Simple) Diffusion Facilitated Diffusion/Passive Transport Osmosis Active Transport Exocytosis Endocytosis (with its 3 subforms)Which of the following are features of facilitated diffusion? There may be more than one correct answer, select all that apply. Requires energy Movement assisted by proteins Can include passive diffusion Depends on ATP hydrolysis Can include ion transport down its concentration gradient in a cell (high to low concentration)Which of the following statements is correct about passive facilitated diffusion? (select all that apply) V It is a process in which molecules move from a region of lower concentration to one of higher concentration (or up a concentration gradient). O It requires a transport protein. O It requires an expenditure of energy by the cell. O It is a process in which molecules move from a region of higher concentration to a region of lower concentration (or down a concentration gradient). O It involves movement of molecules up a concentration gradient and requires a transport protein.
- The surface area to volume ratio affects the ability of the cell to exchange nutrients and waste products with the outside environment. Many factors affect the movement of molecules across the cell membrane, including membrane thickness, temperature, pressure, concentration gradient, molecular mass, distance travelled, solvent properties and surface area of the cell. In general, according to Einstein’s approximation equation (Equation 1), diffusion time is inversely proportional to the to the diffusion coefficient (D), where t is time and x is distance travelled. The diffusion coefficient is unique to each type of molecule and is determined experimentally. Waste products such as carbon dioxide (CO2) pose a unique problem to cells as their accumulation may be lethal. Exchange with the external environment is dependent upon the distance the waste must travel; for a round cell this will be up to half the cell diameter. Using the diffusion coefficient (D) for carbon dioxide (1.97 × 10-5…This graph shows facilitated diffusion of a compound across a cytoplasmic membrane and into a cell. As the external concentration of the compound is increased, the rate of uptake increases until it reaches a point where it slows and then begins to plateau. This is not the case with passive diffusion, where the rate of uptake continually increases as the solute concentration increases. Why does the rate of uptake slow and then eventually plateau with facilitated diffusion?The following are true statements regarding passive facilitated transport EXCEPT The process is always thermodynamically favorable. It uses the same driving force as that of active transport. The movement of solute acrosss the membrane is dictated by existing concentration or ion gradient. It requires a carrier protein which is an integral membrane protein.
- What type of function is performed by SGLT (sodium glucose cotransporter), which uses the energy stored in the high concentration of sodium to move glucose against their concentration gradient? Group of answer choices Simple diffusion Secondary active transport Primary active transport Facilitated diffusionwhat are the correct terms for each letter? Answer choices below primary active diffusion , Potassium, Glucose, Secondary active transport, SODIUM, Facilitated Diffusion, simple diffusion.The transportation of relatively small particles or liquids into the cell that are too big or unable to pass through a transport protein is best described as ________. pinocytosis phagocytosis exocytosis facilitated diffusion diffusion
- Define: simple diffusion, facilitated diffusion, primary active transport, secondary active transport and cotransport (by sure to address symport and antiport) . please explain this iin one sentense for each one please. note: I do not want more than one sentenseSimple diffusion is __________ active passive a form of active transport dependent on ATPWhich of the following are features of facilitated diffusion? Select all that apply. lon transport with its concentration gradient (from high to low) lon transport that requires energy lon transport assisted by proteins lon transport associated with ATP hydrolysis