What is the difference between passive and active transport? Provide an example of a transport protein...
What is the difference between passive and active transport? Provide an example of a transport protein involved in the passive transport of K+, and one protein involved in the active transport of K+ across the plasma membrane and explain the direction of the flow of K+ in each case (from inside the cell to the outside, or from the outside of the cell to the inside). Also explain for each of your examples if the transport is uniport, symport, or antiport. What would happen to the electrochemical gradient of K+ if valinomycin is added to a cell?
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What is the difference between passive and active transport?
Provide an example of a transport protein...
Lo 10: Electrochemical Gradient The difference in voltage across the membrane is called the __________________________________. The...
Lo 10: Electrochemical Gradient The difference in voltage across the membrane is called the __________________________________. The inside of a normal cell is ___________________ (+/-); while the outside is ___________(+/-). The resting membrane potential of a neuron is ___________mV. Diagram the relative ratios of Ca++, Na+ and K+ in a cell under resting conditions. Draw an arrow for each of the molecules indicating which direction would be passive transport (into or out of the cell). For each of the following sentences, fill in...
Roles of the Na+/ K+ pump 1. Maintain the Nat/K+ concentration gradicnt across the plasma membrane....
Roles of the Na+/ K+ pump 1. Maintain the Nat/K+ concentration gradicnt across the plasma membrane. (That's obvious) 2. It plays a role in maintaining the resting membrane potential. Why? 3. The steep electrochemical gradient of Na+ is used in "coupled active transport" (coupled pumps). If the Nat/K+ pump stops, then these Na+ coupled transport mechanisms will also eventually stop. Explain The apical surface of the epithelial cells that line the lumen of the gut contains a symport that used...
33) Which of the following is most likely true of a protein that cotransports glucose and...
33) Which of the following is most likely true of a protein that cotransports glucose and sodium ions into the intestinal cells of an animal? A) Sodium and glucose bind to the same site on the cotransporter. B) Transport of glucose against its concentration gradient provides energy for uptake of sodium ions against the electrochemical gradient. C) Sodium ions can be transported whether or not glucose is present outside the cell, but glucose transport requires cotransport of sodium ions. D)...
11. Discuss/explain/draw what both active and passive transport are and the details of those transport processes...
11. Discuss/explain/draw what both active and passive transport are and the details of those transport processes in the cell. Include the types of active (3) and passive (3) transport methods and how materials move across the cell membrane including details of what is moved and how. (10 pts)
What is the critical difference between passive and active transport? A. passive requires energy but active...
What is the critical difference between passive and active transport? A. passive requires energy but active does not B. passive requires no energy, but active does C. passive and active each require energy, but passive requires less What is an enzyme? A. a protein that facilitates a reaction B. a protein that supplies water for hydrolysis reactions C. a protein that absorbs water during dehydration reactions The First Law of Thermodynamics states: A. energy can be changed from one form...
From the following list of properties, indicate which one(s) can be used to distinguish between each...
From the following list of properties, indicate which one(s) can be used to distinguish between each of the following pairs of transport mechanisms. Transport Mechanisms: A. Simple diffusion; facilitated diffusion B. Facilitated diffusion; active transport C. Simple diffusion; active transport D. Symport; antiport E. Uniport; coupled transport Properties: 1. Directions in which two transported solutes move 2. Direction the solute moves relative to its concentration gradient or its electrochemical potential 3. Kinetics of solute transport (rate and ability to move)...
Discard the answers I chose Match the following scenarios with the most specific type of transport...
Discard the answers I chose
Match the following scenarios with the most specific type of transport used. Some choices may be used more than once. A A white blood cell enguits a bacterial cell A A paramecium swims close to some debris, wraps its membrane around the debris, and pulsit inside, creating a food Vacuole D. An amoeba wraps its cell membrane around a region of dissolved nutrients in water and pulls it inward, making a small vacuole A Phagocytosis...
How does facilitated diffusion differ from simple diffusion? Facilitated diffusion requires ATP Facilitated diffusion requires a...
How does facilitated diffusion differ from simple diffusion? Facilitated diffusion requires ATP Facilitated diffusion requires a solute-specific protein carrier Facilitated diffusion transports solute against its’ concentration gradient Which of the following is TRUE about primary active cell membrane transport? It is a form of transport that requires a protein “pump” It is a form of transport that transports ions and/or solute against their concentration gradient It is a transport mechanism that requires energy released from the splitting of ATP by...
ane Transport - Facilitated Diffusion Side with higher concentration of molecules Transport protein Plasma membrane Facilitated...
ane Transport - Facilitated Diffusion Side with higher concentration of molecules Transport protein Plasma membrane Facilitated diffusion causes a net movement of molecules down their concentration gradient. mework : Membrane Transport - Active Transport Side with higher concentration of square molecules Transport protein Energy input from the cell Plasma membrane Side with lower concentration of square molecules
Telling them apart: From the following list of properties indicate which one(s) can be used to...
Telling them apart: From the following list of properties indicate which one(s) can be used to distinguish between each of the following pairs of transport mechanisms Note: some have multiple properties. Transport Mechanisms: Properties: Simple diffusion: facilitated diffusion Directions in which two transported solutes move Facilitated diffusion: active transport Direction the solute moves relative to its concentration or electrochemical gradient Simple diffusion: active transport Kinetics of solute transport Direct active transport: indirect active transport Requirement for metabolic energy Symport: antiport...
Roles of the Na+/ K+ pump 1. Maintain the Nat/K+ concentration gradicnt across the plasma membrane. (That's obvious) 2. It plays a role in maintaining the resting membrane potential. Why? 3. The steep electrochemical gradient of Na+ is used in "coupled active transport" (coupled pumps). If the Nat/K+ pump stops, then these Na+ coupled transport mechanisms will also eventually stop. Explain The apical surface of the epithelial cells that line the lumen of the gut contains a symport that used...
33) Which of the following is most likely true of a protein that cotransports glucose and sodium ions into the intestinal cells of an animal? A) Sodium and glucose bind to the same site on the cotransporter. B) Transport of glucose against its concentration gradient provides energy for uptake of sodium ions against the electrochemical gradient. C) Sodium ions can be transported whether or not glucose is present outside the cell, but glucose transport requires cotransport of sodium ions. D)...
11. Discuss/explain/draw what both active and passive transport are and the details of those transport processes in the cell. Include the types of active (3) and passive (3) transport methods and how materials move across the cell membrane including details of what is moved and how. (10 pts)
Discard the answers I chose
Match the following scenarios with the most specific type of transport used. Some choices may be used more than once. A A white blood cell enguits a bacterial cell A A paramecium swims close to some debris, wraps its membrane around the debris, and pulsit inside, creating a food Vacuole D. An amoeba wraps its cell membrane around a region of dissolved nutrients in water and pulls it inward, making a small vacuole A Phagocytosis...
ane Transport - Facilitated Diffusion Side with higher concentration of molecules Transport protein Plasma membrane Facilitated diffusion causes a net movement of molecules down their concentration gradient. mework : Membrane Transport - Active Transport Side with higher concentration of square molecules Transport protein Energy input from the cell Plasma membrane Side with lower concentration of square molecules
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