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.
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 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
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 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...
The ribosome in a cell is the site of: a. protein synthesis b. ATP formation c. lipids and steroid molecule synthesis d. intracellular digestion
cell biology Which of the following is an active transport mechanism? a Facilitated diffusion of potassium ions across the membrane through an open potassium channel b Movement of water into a cell c Sodium ions moving out of an animal cell bathed in physiological saline d Movement of CO2 out of a cell e None of the above
1. Animal cells have a Na,K pump that couples the energy of ATP hydrolysis to transport 3 Na ions out of the cell and 2 K ions into the cell. Inside astrocytes, the concentration of Na is 20 mM and the concentration of K is 130 mM. The extracellular concentrations of Na and K are 145 mM and 5 mM, respectively. Calculate the energy required for the transport of Na and K , with this stoichiometry; assume that the cell...