Homework Answers
The answer is first option..
The movement of the sodium ions will be from right to left side of the beaker thus causing the positive charge on the right side of the membrane..! As the sodium ions is lost there is decrease in the sodium ions concentration hence the side acquire the positive charge..!! Positive charge indicates loss of ions..!
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If the membrane shown in the beakers is permeable only to Na^+, and the beaker on...
Please answer the following questions for numbers 7-9. If you are not sure please write it...
Please answer the following questions for numbers 7-9. If you
are not sure please write it next to the problem number. I am a
little confused with these. I will rate good!
. If the membrane shown in the beakers below is only permeable to Na", and the beaker on the left epresents the initial state, which of the following will occur over time? Na A, a. Na will diffuse to the left side of the membrane, causing a net...
Let's say you have two beakers, separated by a membrane that is permeable to water. The...
Let's say you have two beakers, separated by a membrane that is permeable to water. The beaker on the left is beaker A. The beaker on the right is beaker B. A 3.5 M NaCI solution (solution A) is placed in beaker A and a 7 M glucose solution (solution B) is placed in beaker B. The beakers are separated by a membrane that is permeable to water but not to NaCI or glucose. Which of the following statements is/are...
Calculate the equilibrium membrane potentials to be expected across a membrane at 37 ∘C, with a...
Calculate the equilibrium membrane potentials to be expected across a membrane at 37 ∘C, with a NaCl concentration of 0.10 M on the right and 0.01 M on the left, given the following conditions. Consider the process is spontaneous. Part A Membrane permeable only to Na+. Express your answer to three significant figures and include the appropriate units. Δψ = Part B State which side is positive (+) Part C Membrane permeable only to Cl−. Express your answer to three...
A membrane permeable only to Na+ ions separates NaCl solutions of 10-4 M (left) and 10-2...
A membrane permeable only to Na+ ions separates NaCl solutions of 10-4 M (left) and 10-2 M (right). Calculate the transmembrane potential at equilibrium.
In its resting state, the membrane surrounding a neuron is permeable to potassium ions but only...
In its resting state, the membrane surrounding a neuron is
permeable to potassium ions but only slightly permeable to sodium
ions. Thus, positive K ions can flow through the membrane in an
attempt to equalize K concentration, but Na ions cannot as quickly.
This leads to an excess of Na ions outside of the cell. If the
space outside the cell is defined as zero electric potential, then
the electric potential of the interior of the cell is negative.
This...
(OHow does the relative permeability of the membrane to Na and K throughout the course of...
(OHow does the relative permeability of the membrane to Na and K throughout the course of the action potential change compared with that at the resting membrane potential? From the following, select the statement(s) which are CORRECT: Select one or more: a. The number of potassium voltage-gated channels that open determine the amplitude of the action potential b. During the peak of an action potential, there is a 500x increase in the concentration of Na+ that move into the cell....
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...
Quiz 3 Bios 240 1. Two solutions are separated by a semipermeable membrane that is permeable...
Quiz 3 Bios 240 1. Two solutions are separated by a semipermeable membrane that is permeable to sodium but not chloride or potassium ions. Solution A on the left contains a solution that is 100 mM NaCI, while Solution B on the right has a concentration of sodium chloride of 1 mM. There is an electrode in both solutions, and a comparative assessment of voltages between the two compartments is being made. The investigator doing the study decides to call...
Roles of the Na+/ K+ pump 1. Maintain the Nat/K+ concentration gradicnt across the plasma membrane....
Roles of the Na+/ K+ pump 1. Maintain the Nat/K+ concentration gradicnt across the plasma membrane. (That's obvious) 2. It plays a role in maintaining the resting membrane potential. Why? 3. The steep electrochemical gradient of Na+ is used in "coupled active transport" (coupled pumps). If the Nat/K+ pump stops, then these Na+ coupled transport mechanisms will also eventually stop. Explain The apical surface of the epithelial cells that line the lumen of the gut contains a symport that used...
Experiment 2: Diffusion Concentration Gradients and Membrane Permeability Data Tables Table 2: Indicator Reagent Data Indicator...
Experiment 2: Diffusion Concentration Gradients and Membrane
Permeability
Data Tables
Table 2: Indicator Reagent Data
Indicator
Starch Positive
Starch Negative
Glucose Positive
Glucose Negative
Glucose Test Strip
n/a
n/a
green
yellow
IKI Solution
dark blue
light brown
n/a
n/a
Table 3: Diffusion of Starch and Glucose Over
Time
Indicator
Dialysis Bag After 60 Minutes
Beaker Water After 60 Minutes
Glucose Test Strip
yellow
green ( if all glucose passed to the beaker from the bag)
IKI
from incolore changed to...
Please answer the following questions for numbers 7-9. If you
are not sure please write it next to the problem number. I am a
little confused with these. I will rate good!
. If the membrane shown in the beakers below is only permeable to Na", and the beaker on the left epresents the initial state, which of the following will occur over time? Na A, a. Na will diffuse to the left side of the membrane, causing a net...
Let's say you have two beakers, separated by a membrane that is permeable to water. The beaker on the left is beaker A. The beaker on the right is beaker B. A 3.5 M NaCI solution (solution A) is placed in beaker A and a 7 M glucose solution (solution B) is placed in beaker B. The beakers are separated by a membrane that is permeable to water but not to NaCI or glucose. Which of the following statements is/are...
In its resting state, the membrane surrounding a neuron is
permeable to potassium ions but only slightly permeable to sodium
ions. Thus, positive K ions can flow through the membrane in an
attempt to equalize K concentration, but Na ions cannot as quickly.
This leads to an excess of Na ions outside of the cell. If the
space outside the cell is defined as zero electric potential, then
the electric potential of the interior of the cell is negative.
This...
(OHow does the relative permeability of the membrane to Na and K throughout the course of the action potential change compared with that at the resting membrane potential? From the following, select the statement(s) which are CORRECT: Select one or more: a. The number of potassium voltage-gated channels that open determine the amplitude of the action potential b. During the peak of an action potential, there is a 500x increase in the concentration of Na+ that move into the cell....
Quiz 3 Bios 240 1. Two solutions are separated by a semipermeable membrane that is permeable to sodium but not chloride or potassium ions. Solution A on the left contains a solution that is 100 mM NaCI, while Solution B on the right has a concentration of sodium chloride of 1 mM. There is an electrode in both solutions, and a comparative assessment of voltages between the two compartments is being made. The investigator doing the study decides to call...
Roles of the Na+/ K+ pump 1. Maintain the Nat/K+ concentration gradicnt across the plasma membrane. (That's obvious) 2. It plays a role in maintaining the resting membrane potential. Why? 3. The steep electrochemical gradient of Na+ is used in "coupled active transport" (coupled pumps). If the Nat/K+ pump stops, then these Na+ coupled transport mechanisms will also eventually stop. Explain The apical surface of the epithelial cells that line the lumen of the gut contains a symport that used...
Experiment 2: Diffusion Concentration Gradients and Membrane
Permeability
Data Tables
Table 2: Indicator Reagent Data
Indicator
Starch Positive
Starch Negative
Glucose Positive
Glucose Negative
Glucose Test Strip
n/a
n/a
green
yellow
IKI Solution
dark blue
light brown
n/a
n/a
Table 3: Diffusion of Starch and Glucose Over
Time
Indicator
Dialysis Bag After 60 Minutes
Beaker Water After 60 Minutes
Glucose Test Strip
yellow
green ( if all glucose passed to the beaker from the bag)
IKI
from incolore changed to...
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