Compare/contrast – passive diffusion vs. passive carrier-mediated transport – passive carrier-mediated transport vs. active carrier-mediated transport – primary active carrier-mediated transport vs. secondary active carrier-mediated transport
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Compare/contrast
– passive diffusion vs. passive carrier-mediated transport
– passive carrier-mediated transport vs. active carrier-mediated transport
– primary active carrier-mediated transport vs. secondary active carrier-mediated transport
Step by step
Solved in 3 steps
- The comparison of the simple diffusion, facilitated diffusion and active transport are shown in the table below: * Which comparisons are TRUE? Simple Diffusion Facilitated Diffusion Active Transport I Require ATP Does not require ATP Require ATP II Does not involve a Involve a transport Involve a transport transport protein protein protein From a region of higher III From a region of higher concentrațion of substance to a region of lower concentration of From a region of lower concentration of concentration of substance to a region of lower concentration of substance. substance to a region of higher concentration of substance. substance. O I and II only I and III only O Il and III only O I, Il and IIIIn Chapters 11 & 12, the following examples of membrane transport proteins are given. Fill out the table with the correct answer for that particular transport protein. Type of transport protein (channel or carrier/transporter?) K* leak channel glucose transporter bacteriorhodopsin Na-K pump glucose-Na symport Na-H exchanger Performs active or passive transport? Energy source for movement of solute(s) or ion(s) Direction of movement of solute(s) or ion(s) with respect to the electrochemical gradient Na K* Na glucose Na H' Direction of movement of solute(s) or ion(s) with respect to the membrane crossed Na K₁ Na' glucose Na H' Is the protein a uniport, symport, antiport, or none of the above?Differentiate between active transport and passive (simple) diffusion. (At least 4 differences)
- Which of the following characteristics may be used to describe Active Transport? Select all that apply. occurs without a transporter protein requires an energy source shows saturation kinetics (has a maximum rate) can occur against a concentration gradient (i.e. uphill)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.One of the curves below describes nonmediated diffusion, and the other describes facilitated transport. Which is which? Explain your choices. Concentration difference across membrane Rate of transport -
- Classify each phrase based on whether it describes or gives an example of passive transport, facilitated diffusion, both processes, or neither. Passive transport glucose transport across a membrane Facilitated diffusion cholesterol transport across a membrane protein-assisted movement. Answer Bank Both movement to an area of lower concentration. movement across a membrane Neither requires an input of energyWhich 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 hydrolysisFor each of the following scenarios described where a molecule or ion is moving from one side of a membrane to the other, select the method by which the molecule or ion is moving. Each answer can be used more than once, or not at all. - Simple Diffusion - Facilitated diffusion by a channel protein - Facilitated diffusion by a carrier/transport protein - Active transport by a pump - Could be facilitated diffusion by a channel or a carrier; not enough information is given A- While water can freely diffuse across the membrane, it does not do so fast enough for living organisms to function properly. Therefore, membrane proteins known as aquaporins can increase the rate at which water moves across the membrane. The movement of water across the membrane via aquaporins (which do not change shape) is an example of which type of transport? B-Many snake venoms induce paralysis by acting on acetylcholine receptors. Nicotinic acetylcholine receptors are transmembrane proteins that allow Na+, K+…
- Diffusion and osmosis classification Classify the following characteristics based on whether they are describing diffusion, osmosis, or both. Diffusion Results in an Can occur with equal distribution of solute molecules or without a membrane Always involves the movement of water Requires a semi-permeable membrane Osmosis Involves the movement of gases, ions, and small water soluble molecules Passive form of movement that requires no energy Moves from areas of high concentration to low Both Diffusion and Osmosis Responsible for gas exchange in the lungs concentration A 3 of 15 Next > Cation to open the document "Epicinstaller-13.0.0-fortnite-a8e4f12cada646caa706d8be407be69f (3).msi". tv 22Facilitated diffusion differs from active transport in that facilitated diffusion transports against a concentration gradient while active transport does not facilitated diffusion requires expenditure of energy while active transport does not active transport requires expenditure of energy while facilitated diffusion does not facilitated diffusion involves carrier proteins while active transport does not facilitated diffusion works against a concentration gradient while active transport works only with the concentration gradientHow is active transport different from simple diffusion? Both active transport and simple diffusion transport molecules against the concentration gradient. In active transport, molecules are moved down the concentration gradient; on the B contrary, molecules to be transported in simple diffusion are moved against the concentration gradient. In active transport, molecules are transported with the aid of transport proteins; on the © other hand, molecules to be transported in simple diffusion do not need transport proteins. In active transport, molecules that are transported does not need metabolic energy; in contrast, molecules transported in simple diffusion need metabolic energy.