Roles of the Na+/ K+ pump 1. Maintain the Nat/K+ concentration gradicnt across the plasma membrane....
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...
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...
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
Q2. The Na+/K+ pump and voltage gated K+ channels both transport K+ across the membrane. A) Compare and contrast these two mechanisms for K+ transport indicating important functional and structural differences. B) Describe the process for putting a voltage gated K+ channel in the membrane starting at the ribosome and ending at the plasma membrane.
The Na glucose symporter transports glucose from the lumen of the small intestine into cells lining the lumen. Transport of 1 glucose molecule is directly coupled to the transport of 2 Nations into the cell. 2 Na*(out) + 1 glucose(out) - 2 Nat(in) + 1 glucose(in) Assume the following conditions at 37 °C: [Nalin - 12 mm, [Na lout = 145 mm, (glucoseJout = 28 pm, and Ay =-72 mV (inside negative). Faraday constant F = 96,485 C/mol, ideal gas...
question#38 31. Which of the following is corransported with Na' in the apical membrane of produ cells of the kidney! Curea c. glucose b. K d. choline 32. To calculate the transport maximum for substance X wil need to know the GFR and the a. rate of secretion of substance X b. filtered load of substance X c. plasma concentration of substance X d. renal threshold of substance X c. filtration fraction of substance X True/False Label the following statements...
A&P Flix Activity: Membrane Transport Substances can move across the plasma membrane in two different ways-actively or passively. This activity will help you determine whether transport mech! Sort the following types of membrane transport mechanisms into active or passive processes. View Available Hint(s) Reset Help Endocytonio Dumoals Secondary active transport Exocvent Facilitated dimson Simple damunten Primary active transport Active Process Passive Process Submit Type here to search API Spr google.com 1 Chapter 1 - 3 Flix Activity: Membrane Transport High...
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
The Nat -k* pump uses the energy of Nat moving down its concentration gradient to pump k up its concentration gradient. Answers A-B A True B False Voltage-gated Na* channels exist in three distinct conformations in axons because Answers A-D A they assume an inactivated conformation shortly after opening, which ensures that the action potential cannot move backwards toward the cell body. B they change conformation when binding Nat and transporting it to the opposite side of the membrane before...
Part A - Concept map: movement across membranes Complete the Concept Map to relate plasma membrane structure to active and passive transport processes. Drag the appropriate labels to their respective targets. View Available Hint(s) Reset Help acine transport diffusion membrane transport mechanism endocytosis vesicular transport osmosis facilitated diffusion exocytosis that engulfs any type of extracelular materials Via membranous sacs is that experts packaged materials is that uses ATP to Dump solutosis of water is that passive moves substances down ther...