What are the six steps of the cycle of activity of the sodium ion-potassium ion ATPase?...
What are the six steps of the cycle of activity of the sodium ion-potassium ion ATPase? Tell which direction the ions are moved and why you need ATP.
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What are the six steps of the cycle of activity of the sodium
ion-potassium ion ATPase?...
1. 2. 3. Select all that apply. The sodium-potassium ion pump: hydrolyzes ATP, utilizing the free...
1.
2.
3.
Select all that apply. The sodium-potassium ion pump: hydrolyzes ATP, utilizing the free phosphate ion to temporarily bind to the transport protein. opens a channel through the membrane by phosphorylating one subunit of the transport protein. D is the only known ion pump. D is mediated by one enzyme that both hydrolyzes ATP and transports the ions. can be run in reverse, phosphorylating ADP to ATP Which of the following describes secondary active transport? O The antiport...
please help! 23. What type of transporter is the Na-K ATPase transporter? A) uniporter B) symporter...
please help!
23. What type of transporter is the Na-K ATPase transporter? A) uniporter B) symporter C) antiporter D) superporter 24. What type of transporter is the ATP synthase? A) uniporter B) symporter C ) antiporter D) superporter 25. How does the potassium channel allow potassium to pass and not sodium? A) by size, sodium has a larger radius B) by charge, sodium is uncharged C) sodium interacts with water differently D) sodium is a non-polar metal ion
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...
Your classmate is excited to tell you about something they just learned. There’s a toxin named...
Your classmate is excited to tell you about something they just learned. There’s a toxin named ouabain that was used by East Africans to make poison arrows. “And guess what-ouabain kills people by blocking the sodium/potassium pump that we learned about in BILD 1!” But your classmate is confused about something. “The sodium/potassium pump moves sodium and potassium ions against the concentration gradients, in the opposite direction of how the ions would normally go. But in class we said that...
3. You make an empty lipid vesicle whose sole membrane protein is a version of the sodium-potassi...
3. You make an empty lipid vesicle whose sole membrane protein is a version of the sodium-potassium pump found in neurons, that has been modified to pump one Na ion every time it pumps one K ion. It is oriented in the membrane the same way it is in neurons a) What would you expect to happen if you placed this vesicle in a solution containing only an equal concentration of Na* and K* ions, and filled the vesicle with...
The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and...
The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and calcium, that are dissolved in water as ions. These ions enter cells through narrow pores in the cell membrane known as ion channels. Each ion channel, which is formed from a specialized protein molecule, is selective for one type of ion. When an ion channel opens in a cell wall, monovalent (charge ee) ions flow through the channel at a rate of 1.0×107ions/s1.0×107ions/s. The...
please answer both Which of the following statements is true? The H+/K+-ATPase (proton pump) generates ATP...
please answer both
Which of the following statements is true? The H+/K+-ATPase (proton pump) generates ATP as hydrogen ions are pumped out of parietal cells. Parietal cells of the stomach produce and release hydrochloric and nitric acid. Parietal cells of the stomach exchange sodium for potassium in order to maintain homeostasis prior to stimulation. When a histamine receptor antagonist is presented to parietal cells, followed by histamine, the internal pH of the parietal cells increases dramatically. Figure 23.4 suggests that...
Although each ion in a sodium chloride crystal has six nearest neighbors, the value of the...
Although each ion in a sodium chloride crystal has six nearest neighbors, the value of the lattice energy for NaCl(s), 1.28 aJ per formula unit, is only about one and a half times the magnitude of the coulombic energy per NaCl ion pair of 0.816 aJ. Why do you think the vaue of the energy for NaCl(s) isn't about six times that of the coulombic energy per ion pair?
What is the main function of the sodium potassium pump in the neuron? a. Establish concentration...
What is the main function of the sodium potassium pump in the neuron? a. Establish concentration gradients for sodium and potassium ions. b. Depolarize the membrane to threshold. c. Make the inside of the cell more negative than the outside. d. Make the inside of the cell more positive than the outside. e. Pump ions down their concentration gradients during an action potential. A patient of yours has been poisoned by a toxin which prevents fast repolarization of the membrane...
The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and...
The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and calcium, that are dissolved in water as ions. These ions enter cells through narrow pores in the cell membrane known as ion channels. Each ion channel, which is formed from a specialized protein molecule, is selective for one type of ion. High-resolution measurements have shown that an ion channel is a 0.30-nm-diameter cylinder with length of 5.0 nm. The intracellular fluid filling the ion...
1.
2.
3.
Select all that apply. The sodium-potassium ion pump: hydrolyzes ATP, utilizing the free phosphate ion to temporarily bind to the transport protein. opens a channel through the membrane by phosphorylating one subunit of the transport protein. D is the only known ion pump. D is mediated by one enzyme that both hydrolyzes ATP and transports the ions. can be run in reverse, phosphorylating ADP to ATP Which of the following describes secondary active transport? O The antiport...
please help!
23. What type of transporter is the Na-K ATPase transporter? A) uniporter B) symporter C) antiporter D) superporter 24. What type of transporter is the ATP synthase? A) uniporter B) symporter C ) antiporter D) superporter 25. How does the potassium channel allow potassium to pass and not sodium? A) by size, sodium has a larger radius B) by charge, sodium is uncharged C) sodium interacts with water differently D) sodium is a non-polar metal ion
3. You make an empty lipid vesicle whose sole membrane protein is a version of the sodium-potassium pump found in neurons, that has been modified to pump one Na ion every time it pumps one K ion. It is oriented in the membrane the same way it is in neurons a) What would you expect to happen if you placed this vesicle in a solution containing only an equal concentration of Na* and K* ions, and filled the vesicle with...
please answer both
Which of the following statements is true? The H+/K+-ATPase (proton pump) generates ATP as hydrogen ions are pumped out of parietal cells. Parietal cells of the stomach produce and release hydrochloric and nitric acid. Parietal cells of the stomach exchange sodium for potassium in order to maintain homeostasis prior to stimulation. When a histamine receptor antagonist is presented to parietal cells, followed by histamine, the internal pH of the parietal cells increases dramatically. Figure 23.4 suggests that...
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