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Question 33 2.5 pts The Na+-K+ ATPase transporter found in the plasma membrane of most animal...
The function of Na+K+ ATPase in a cell membrane of cultured cells is being investigated. The...
The function of Na+K+ ATPase in a cell membrane of cultured cells is being investigated. The cell is then supplied with an analog of ATP (ATV, adenosine tri canada the) this binds to the protein but there is no hydrolysis. What would be the affect of this drug on the transporter
Na^+/K^+ ATPase (sodium potassum adenosine triphosphatase) is found in the plasma membrane and catalyzes the exchange...
Na^+/K^+ ATPase (sodium potassum adenosine triphosphatase) is found in the plasma membrane and catalyzes the exchange of sodium and potassium ions across the membrane. Sort the following statements about the transport system as either true or false.
QUESTION 39 Whereas animal cells drive indirect transport across the plasma membrane with a Na+ gradient,...
QUESTION 39 Whereas animal cells drive indirect transport across the plasma membrane with a Na+ gradient, other organisms like plants and bacteria use O A a glucose gradient B. a Ca2+ gradient C. a proton gradient D. osmosis E. endocytosis and exocytosis. Flight energy
Question 1 Which of the following are likely to diffuse through the plasma membrane? glucose K+...
Question 1 Which of the following are likely to diffuse through the plasma membrane? glucose K+ Cl- H20 Na+ CO2 02 lipid Question 4 Which is(are) true about transport across the membrane? Channels can perform either active or passive transport Charged molecules move according to their electrochemical gradients Movement of an ion down its gradient requires energy Transporters are faster but less selective than channels Question 6 In the coupled transport of Na+ and glucose, the transporter O is an...
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)...
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...
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...
21. The fluid in blood vessels and the Interstitial space is referred to as: a. The...
21. The fluid in blood vessels and the Interstitial space is referred to as: a. The extracellular fluid compartment b. Plasma c. The Intracellular fluid compartment 22. Why is the resting cell membrane more permeable to K+ than to Na+? a. Because gated K+ channels are always open. b. Because K+ can diffuse through the phospholipid bilayer of the resting cell membrane and Na+ cannot. c. Because the cell membrane contains Leak (ungated) K+ Channels. 23. Lipid soluble molecules, carbon...
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded...
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded protein, away from water on the exterior surface of the protein, interacting with water C) in the interior of the folded protein, away from water, or in a tranomembrane portion interacting with lipid fatty acid chains D) in the transmembrane portion interacting with lipid fatty acid chains- 20) Which of the following are found in plant, animal, and bacterial cells? A) chloroplasts C) ribosomes...
Question 38 1 pts What is an important role of the Nat/K+ ATPase? It actively transports...
Question 38 1 pts What is an important role of the Nat/K+ ATPase? It actively transports T3 and T4 into follicular cells It maintains the sodium gradient across the plasma membrane It cotransports glucose and sodium into small intestinal epithelial cells O It is responsible for the effective refractory period in cardiac muscle Question 36 1 pts What happens to fat digestion products after they've been absorbed into an enterocyte? The enterocyte stores them They're catabolized to create ATP The...
Na^+/K^+ ATPase (sodium potassum adenosine triphosphatase) is found in the plasma membrane and catalyzes the exchange of sodium and potassium ions across the membrane. Sort the following statements about the transport system as either true or false.
QUESTION 39 Whereas animal cells drive indirect transport across the plasma membrane with a Na+ gradient, other organisms like plants and bacteria use O A a glucose gradient B. a Ca2+ gradient C. a proton gradient D. osmosis E. endocytosis and exocytosis. Flight energy
Question 1 Which of the following are likely to diffuse through the plasma membrane? glucose K+ Cl- H20 Na+ CO2 02 lipid Question 4 Which is(are) true about transport across the membrane? Channels can perform either active or passive transport Charged molecules move according to their electrochemical gradients Movement of an ion down its gradient requires energy Transporters are faster but less selective than channels Question 6 In the coupled transport of Na+ and glucose, the transporter O is an...
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)...
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...
21. The fluid in blood vessels and the Interstitial space is referred to as: a. The extracellular fluid compartment b. Plasma c. The Intracellular fluid compartment 22. Why is the resting cell membrane more permeable to K+ than to Na+? a. Because gated K+ channels are always open. b. Because K+ can diffuse through the phospholipid bilayer of the resting cell membrane and Na+ cannot. c. Because the cell membrane contains Leak (ungated) K+ Channels. 23. Lipid soluble molecules, carbon...
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded protein, away from water on the exterior surface of the protein, interacting with water C) in the interior of the folded protein, away from water, or in a tranomembrane portion interacting with lipid fatty acid chains D) in the transmembrane portion interacting with lipid fatty acid chains- 20) Which of the following are found in plant, animal, and bacterial cells? A) chloroplasts C) ribosomes...
Question 38 1 pts What is an important role of the Nat/K+ ATPase? It actively transports T3 and T4 into follicular cells It maintains the sodium gradient across the plasma membrane It cotransports glucose and sodium into small intestinal epithelial cells O It is responsible for the effective refractory period in cardiac muscle Question 36 1 pts What happens to fat digestion products after they've been absorbed into an enterocyte? The enterocyte stores them They're catabolized to create ATP The...
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