Homework Answers
1.b. enzyme, sodium
The sodium potassium pump is an enzyme tht moves sodium out of the cell.
2. c. A and B
Activation energy is requred for anabolic and catabolic reactions
3. a. extreme cold temperatures
Organisms living in extreme cold environments would benefit from having a high concentration of unsaturated fatfy acids in their cell membrane.
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that moves out the cell The sodium-potassium pump is an A. Enzyme ATP B. Enzyme, sodium...
Question 61 The ATP dependent sodium-potassium pump forces potassium ions the cell and sodium ions the...
Question 61 The ATP dependent sodium-potassium pump forces potassium ions the cell and sodium ions the cell. out of, out of out of into into; out of into: into
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...
In the sodium-potassium pump: sodium and potassium both enter the cell sodium and potassium both leave...
In the sodium-potassium pump: sodium and potassium both enter the cell sodium and potassium both leave the cell potassium enters and sodium leaves the cell sodium enters and potassium leaves the cell. The movements of sodium and potassium depends on concentration differences. The reticular activating system is composed of neurons that are part of the reticular formation is a loose arrangement of neurons with many interconnecting synapse. functions in the brain stem and midbrain. functions to arouse the cerebral cortex...
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...
In the operation of the Na+-K+ pump: A) a Na+ is transported out of the cell...
In the operation of the Na+-K+ pump: A) a Na+ is transported out of the cell for every K+ transported into the cell. B) Na+ and K+ are both transported out of the cell. C) the membrane transport protein is phosphorylated by ATP. D) conformational changes in the membrane protein are inhibited. E) Na+ and K+ bind to the lipid portion of the membrane.
The sodium-potassium pump (aka Na-K ATPase) a.pumps Na out of and K* into the cell b....
The sodium-potassium pump (aka Na-K ATPase) a.pumps Na out of and K* into the cell b. pumps Na* and K* out of the cell pumps Na* and K* into the cell d. pumps Na into and K* out of the cell
2. How is ATP used in most cell processes? a. It binds to a substrate and...
2. How is ATP used in most cell processes? a. It binds to a substrate and provides energy when the phosphate group is released. b. indirectly, by providing electrons to an acceptor c. Hydrolysis of ATP is coupled to an endergonic reaction. d. It increases the efficiency of some key enzymes. e. none of the above 2. How is ATP used in most cell processes? a. It binds to a substrate and provides energy when the phosphate group is released....
The Na+/K+ pump transports 2 K+ into the cell and 3 Nat out of the cell...
The Na+/K+ pump transports 2 K+ into the cell and 3 Nat out of the cell under the use of ATP. Under normal circumstances, the concentration of K+ inside the cell is 140 mm, while the [K] outside of the cell is 6 mM. The concentration of Nat inside the cell is 16 mM, while the [Na] outside the cell is 145 mm. The membranpotential is -0.07 V The temperature is 37°C/310,15K c) Calculate how much energy (kJ/mol it takes...
25. Water intoxication, also known asrefers to low blood levels of sodium. a. hyponatremia b. hypokalemia c. hypoca...
25. Water intoxication, also known asrefers to low blood levels of sodium. a. hyponatremia b. hypokalemia c. hypocalcemia d. achlorhydria 26. The pump, a cell membrane protein, helps maintain fluid balance in the body. a. sodium-phosphate b. sodium-chloride c. sodium-potassium d. sodium-iodine 27. Potassium helps maintain the a. extracellular b. intracellular fluid volume. c. intravascular d. interstitial 28. Water may be described as being a. essential b. organic c. caloric d. all of the above 29. Electrolytes arethat form ions...
The ribosome in a cell is the site of: a. protein synthesis b. ATP formation c....
The ribosome in a cell is the site of: a. protein synthesis b. ATP formation c. lipids and steroid molecule synthesis d. intracellular digestion
Question 61 The ATP dependent sodium-potassium pump forces potassium ions the cell and sodium ions the cell. out of, out of out of into into; out of into: into
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...
In the sodium-potassium pump: sodium and potassium both enter the cell sodium and potassium both leave the cell potassium enters and sodium leaves the cell sodium enters and potassium leaves the cell. The movements of sodium and potassium depends on concentration differences. The reticular activating system is composed of neurons that are part of the reticular formation is a loose arrangement of neurons with many interconnecting synapse. functions in the brain stem and midbrain. functions to arouse the cerebral cortex...
The sodium-potassium pump (aka Na-K ATPase) a.pumps Na out of and K* into the cell b. pumps Na* and K* out of the cell pumps Na* and K* into the cell d. pumps Na into and K* out of the cell
The Na+/K+ pump transports 2 K+ into the cell and 3 Nat out of the cell under the use of ATP. Under normal circumstances, the concentration of K+ inside the cell is 140 mm, while the [K] outside of the cell is 6 mM. The concentration of Nat inside the cell is 16 mM, while the [Na] outside the cell is 145 mm. The membranpotential is -0.07 V The temperature is 37°C/310,15K c) Calculate how much energy (kJ/mol it takes...
25. Water intoxication, also known asrefers to low blood levels of sodium. a. hyponatremia b. hypokalemia c. hypocalcemia d. achlorhydria 26. The pump, a cell membrane protein, helps maintain fluid balance in the body. a. sodium-phosphate b. sodium-chloride c. sodium-potassium d. sodium-iodine 27. Potassium helps maintain the a. extracellular b. intracellular fluid volume. c. intravascular d. interstitial 28. Water may be described as being a. essential b. organic c. caloric d. all of the above 29. Electrolytes arethat form ions...
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