Homework Answers
ANSWER: Transport only when binds to both the solute
Sodium-dependent glucose cotransporters are the proteins which binds to both glucose and sodium to transport both the molecules in same direction, therefore they are called as symporters.They do not require ATP in the process. They are present in small intestine mucosa and kidney nephrons.
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Question 6 In the coupled transport of Na+ and glucose, the transporter transports only when it...
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...
You are testing the rate of glucose transport into vesicles using a Na^+-glucose pump. This transporter...
You are testing the rate of glucose transport into vesicles using a Na^+-glucose pump. This transporter protein transports Na^+ and glucose in the same direction, and is a coupled transporter such that binding of cither Na^+ or glucose increases the affinity of the transporter to bind the other solute. In experiment 1, you create artificial vesicles that have the Na^+-glucose pump in the membrane. These vesicles have glucose but no Na^+ ions inside. You place these vesicles into a series...
Question 33 2.5 pts The Na+-K+ ATPase transporter found in the plasma membrane of most animal...
Question 33 2.5 pts The Na+-K+ ATPase transporter found in the plasma membrane of most animal cells gets its energy from: ATP hydrolysis The electrochemical gradient across the membrane O Co-transport of H+ into the cell None are correct, this transporter functions by facilitated diffusion All are correct
QUESTION 32 Which of the following is an example of a gradient-driven active transporter O A...
QUESTION 32 Which of the following is an example of a gradient-driven active transporter O A Aquaporin water transport B. Na+K+ ATPase glucose permease transport D. Osmosis E. Na glucose symport F. All of these answers are correct G. None of these answers are correct
Consider a secondary active transporter that uses symport for two molecules, X and Y. If X...
Consider a secondary active transporter that uses symport for two molecules, X and Y. If X is the molecule being actively pumped and Y is present in higher concentration inside the cell, which of the following is true? (It might be helpful to sketch out the situation to visualize it better.) Xis present at higher concentrations inside the cell. X is being pumped from outside the cell into the cell. Xis present at higher concentrations outside the cell. Y is...
QUESTION 2 Which is true of both symporters and antiporters? O Both solutes move up their...
QUESTION 2 Which is true of both symporters and antiporters? O Both solutes move up their concentration gradient. Both solutes move down their concentration gradients. Both require energy to function. • one solute moves down its concentration gradient while the other moves up QUESTION 3 What is the correct order of permeability for the following four substances across a pure phosopholipid bilayer? • 02 > ethanol > Na+ > ATP Na+ > ethanol > 02 > ATP 02> Na+ >...
During secondary active transport, the movement of one substance down its electrochemical gradient provides the force...
During secondary active transport, the movement of one substance down its electrochemical gradient provides the force to move another substance up its electrochemical gradient. When both substances move in the same direction the mechanism is referred to as a(n) O symporter. O antiporter. O importer. O deporter.
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...
During the aerobic metabolism of glucose, glucose is ____________. Reduced to form water Oxidized to form...
During the aerobic metabolism of glucose, glucose is ____________. Reduced to form water Oxidized to form water Reduced to form CO2 Oxidized to form CO2 Which of the following describes the equation: FAD + XH2 à FADH2 + X. FAD is reduced to FADH2 It is a coupled reduction – oxidation reaction XH2 is oxidized to X All of the above Which of the following is FALSE about glycolysis? The initial steps of glycolysis requires energy derived from the splitting...
What process uses ATP to create glucose? O ATP synthase electron transport chain O gluconeogenesis O...
What process uses ATP to create glucose? O ATP synthase electron transport chain O gluconeogenesis O citric acid cycle Question 11 (2 points) What would expect to happen in mitochondria that have fewer cristae Increased proton motive force Decreased oxygen usage increased ATP to ADP conversion O No change in mitocondrial funciton Question 12 (2 points) What is one example of when energy molecules/electron carriers are produced during the citric acid cycle? O conversion of succinate to fumarate O addition...
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...
You are testing the rate of glucose transport into vesicles using a Na^+-glucose pump. This transporter protein transports Na^+ and glucose in the same direction, and is a coupled transporter such that binding of cither Na^+ or glucose increases the affinity of the transporter to bind the other solute. In experiment 1, you create artificial vesicles that have the Na^+-glucose pump in the membrane. These vesicles have glucose but no Na^+ ions inside. You place these vesicles into a series...
Question 33 2.5 pts The Na+-K+ ATPase transporter found in the plasma membrane of most animal cells gets its energy from: ATP hydrolysis The electrochemical gradient across the membrane O Co-transport of H+ into the cell None are correct, this transporter functions by facilitated diffusion All are correct
QUESTION 32 Which of the following is an example of a gradient-driven active transporter O A Aquaporin water transport B. Na+K+ ATPase glucose permease transport D. Osmosis E. Na glucose symport F. All of these answers are correct G. None of these answers are correct
Consider a secondary active transporter that uses symport for two molecules, X and Y. If X is the molecule being actively pumped and Y is present in higher concentration inside the cell, which of the following is true? (It might be helpful to sketch out the situation to visualize it better.) Xis present at higher concentrations inside the cell. X is being pumped from outside the cell into the cell. Xis present at higher concentrations outside the cell. Y is...
QUESTION 2 Which is true of both symporters and antiporters? O Both solutes move up their concentration gradient. Both solutes move down their concentration gradients. Both require energy to function. • one solute moves down its concentration gradient while the other moves up QUESTION 3 What is the correct order of permeability for the following four substances across a pure phosopholipid bilayer? • 02 > ethanol > Na+ > ATP Na+ > ethanol > 02 > ATP 02> Na+ >...
During secondary active transport, the movement of one substance down its electrochemical gradient provides the force to move another substance up its electrochemical gradient. When both substances move in the same direction the mechanism is referred to as a(n) O symporter. O antiporter. O importer. O deporter.
What process uses ATP to create glucose? O ATP synthase electron transport chain O gluconeogenesis O citric acid cycle Question 11 (2 points) What would expect to happen in mitochondria that have fewer cristae Increased proton motive force Decreased oxygen usage increased ATP to ADP conversion O No change in mitocondrial funciton Question 12 (2 points) What is one example of when energy molecules/electron carriers are produced during the citric acid cycle? O conversion of succinate to fumarate O addition...
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