The relative osmotic pressure and back pressure are equal, which statement is true? a. The membrane...
The relative osmotic pressure and back pressure are equal, which statement is true?
a. The membrane is no longer semi permeable
b. The flow of water will be zero
c. The flow of water will reverse
d. The active transport across the membrane can begin
Homework Answers
When osmotic pressure and back pressure are equal then (b) The flow of water will be zero.
Because in this case the density is same so no net flow of water in any direction.
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The relative osmotic pressure and back pressure are equal, which
statement is true?
a. The membrane...
6. Under what conditions is water actively transported across a membrane? A. Only from high osmotic...
6. Under what conditions is water actively transported across a membrane? A. Only from high osmotic pressure to low osmotic pressure B. Only from low osmotic pressure to high osmotic pressure C. Only mammals have evolved the capacity for active transport of water in the kidney D. Many vertebrates have aquaporins that can actively transport water E. None - water always moves by passive transport 7. You are studying two animals from the central Atlantic Ocean, a cnidarian and a...
Which statement is TRUE? The membrane potential is negative on the cytoplasmic side and positive on...
Which statement is TRUE? The membrane potential is negative on the cytoplasmic side and positive on the matrix side. The genomes of mitochondria don't range in size across species. The inner membrane is quite permeable because it contains mitochondrial porin, or VDAC (voltage-dependent anion channel). Mitochondria are semi-autonomous organelles, because mitochondria depend on the cell, and cells that contain mitochondria in turn depend on these organelles for oxidative phosphorylation. In bacteria, ATP-synthesizing complexes are located in the outer plasmatic membrane.
Two aqueous solutions, A and B, are separated by a semipermeable membrane. The osmotic pressure of...
Two aqueous solutions, A and B, are separated by a semipermeable membrane. The osmotic pressure of solution A immediately begins to decrease. Which of the following statements is true? Solvent molecules are moving from solution B into solution A. The initial osmotic pressure of solution B is greater than that of solution A. The solvent molecules are moving from the solution of higher osmotic pressure to that of lower osmotic pressure. Both B and C are true statements.
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...
A diagram of a U tube for measuring osmotic pressure is shown below. The height different...
A diagram of a U tube for measuring osmotic pressure is shown below. The height different between the two columns of liquid is 10.00 Cm. The dashed line represent a semi-permeable membrane through which solvent molecules can pass, but solute molecules can not. i) On which side (right or left) is the solute located? ii) Calculate the osmotic pressure in atmospheres. Hint this is actually easy: The pressure difference is given by rho gH. Where rho is the density of...
Membrane Separation II Reverse Osmosis (a) Derive van't Hoff's equation (osmotic pressure π-CRT). (b) A feed solution containing 5g NaCl/L (ρ-1001kg/m3) is purified using a reverse osmosis sy...
Membrane Separation II Reverse Osmosis (a) Derive van't Hoff's equation (osmotic pressure π-CRT). (b) A feed solution containing 5g NaCl/L (ρ-1001kg/m3) is purified using a reverse osmosis system. Water permeability constant (Aw) and a solute (NaCI) permeability constant (As) are 5 x 10 kg/m2s atm, and 4 x 10-7m/s, respectively. AP 30 atm. Assume that the fraction recovered of the solvent water is 0.15. The flow rate q2 of the permeate water solution is 50 L/min. Calculate ci and c2...
Question 5 1 pts With regards to the renal system, pick the TRUE statement about GFR....
Question 5 1 pts With regards to the renal system, pick the TRUE statement about GFR. This is the process that creates the osmotic gradient It can increase with afferent arteriolar vasodilation It refers to blood flow in the glomerulus It can be estimated by calculating the clearance of water Question 2 1 pts Pick the TRUE statement about cotransport processes in the renal PCT.. These processes always clear the blood of the transported molecule They are a form of...
33) Which of the following is most likely true of a protein that cotransports glucose and...
33) Which of the following is most likely true of a protein that cotransports glucose and sodium ions into the intestinal cells of an animal? A) Sodium and glucose bind to the same site on the cotransporter. B) Transport of glucose against its concentration gradient provides energy for uptake of sodium ions against the electrochemical gradient. C) Sodium ions can be transported whether or not glucose is present outside the cell, but glucose transport requires cotransport of sodium ions. D)...
Active transport across a membrane results in Select one: a. equal concentration of ions on each...
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Which statement below best summarizes the driving force behind osmotic pressure? A) The solution inside the...
Which statement below best summarizes the driving force behind osmotic pressure? A) The solution inside the membrane is non-ideal. The solute inside seeks to make it more ideal by crossing the membrane. B) The solution inside the membrane is ideal. The solvent outside is not, but seeks to become more ideal by crossing the membrane. C) The solution inside the membrane is ideal. The solvent outside is made less ideal by solute passing out of the membrane. D) The solution...
Which statement is TRUE? The membrane potential is negative on the cytoplasmic side and positive on the matrix side. The genomes of mitochondria don't range in size across species. The inner membrane is quite permeable because it contains mitochondrial porin, or VDAC (voltage-dependent anion channel). Mitochondria are semi-autonomous organelles, because mitochondria depend on the cell, and cells that contain mitochondria in turn depend on these organelles for oxidative phosphorylation. In bacteria, ATP-synthesizing complexes are located in the outer plasmatic membrane.
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...
A diagram of a U tube for measuring osmotic pressure is shown below. The height different between the two columns of liquid is 10.00 Cm. The dashed line represent a semi-permeable membrane through which solvent molecules can pass, but solute molecules can not. i) On which side (right or left) is the solute located? ii) Calculate the osmotic pressure in atmospheres. Hint this is actually easy: The pressure difference is given by rho gH. Where rho is the density of...
Membrane Separation II Reverse Osmosis (a) Derive van't Hoff's equation (osmotic pressure π-CRT). (b) A feed solution containing 5g NaCl/L (ρ-1001kg/m3) is purified using a reverse osmosis system. Water permeability constant (Aw) and a solute (NaCI) permeability constant (As) are 5 x 10 kg/m2s atm, and 4 x 10-7m/s, respectively. AP 30 atm. Assume that the fraction recovered of the solvent water is 0.15. The flow rate q2 of the permeate water solution is 50 L/min. Calculate ci and c2...
Question 5 1 pts With regards to the renal system, pick the TRUE statement about GFR. This is the process that creates the osmotic gradient It can increase with afferent arteriolar vasodilation It refers to blood flow in the glomerulus It can be estimated by calculating the clearance of water Question 2 1 pts Pick the TRUE statement about cotransport processes in the renal PCT.. These processes always clear the blood of the transported molecule They are a form of...
33) Which of the following is most likely true of a protein that cotransports glucose and sodium ions into the intestinal cells of an animal? A) Sodium and glucose bind to the same site on the cotransporter. B) Transport of glucose against its concentration gradient provides energy for uptake of sodium ions against the electrochemical gradient. C) Sodium ions can be transported whether or not glucose is present outside the cell, but glucose transport requires cotransport of sodium ions. D)...
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