A pore of a K+ channel has the diameter of about 5.5 angstroms, and this channel is...
A pore of a K+ channel has the diameter of about 5.5 angstroms, and this channel is only selective for potassium, not water. How is it possible that water can't enter the channel when the diameter of the channel is 3 angstroms?
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A pore of a K+ channel has the diameter of about 5.5
angstroms, and this channel is...
If a zeolite had a pore size of 8 Angstroms diameter, which molecule(s) could enter it...
If a zeolite had a pore size of 8 Angstroms diameter, which molecule(s) could enter it either a) Easily (always) b) Occasionally (sometimes) c) Never H2,02, C4H10, C6H6, Hemoglobin, CH4, Isopropanol
What explains the 10,000 to 1 selectivity of the potassium channel for K+ over Na+ considering...
What explains the 10,000 to 1 selectivity of the potassium channel for K+ over Na+ considering that the atomic radii of these two ions differ by only 0.4 Angstroms.
A certain single ion channel is selectively permeable to K+ and has a resistance of 1.5...
A
certain single ion channel is selectively permeable to K+ and has a
resistance of 1.5 GI, therefore a current of potassium ions through
the channel is possible. During an experiment, the channel is open
for approximately 1.50 ms while the voltage across the channel is
maintained at 81.5 mV. How many K+ ions travel through the channel
during this time?
A certain single ion channel is selectively permeable to K+ and has a resistance of 1.15 G, therefore a...
A certain single ion channel is selectively permeable to K+ and has a resistance of 1.15...
A certain single ion channel is selectively permeable to K+ and has a resistance of 1.15 GΩ , therefore a current of potassium ions through the channel is possible. During an experiment, the channel is open for approximately 1.50 ms while the voltage across the channel is maintained at 81.5 mV . How many K+ ions travel through the channel during this
4. Inspired by the natural design of cell membranes, you have invented a strange new semi-permeable...
4. Inspired by the natural design of cell membranes, you have invented a strange new semi-permeable membrane consisting of a water-impemeable base layer interspersed with hydrophilic transmembrane glycoproteins which form three types of channels. Channel type 'A' is approx imately 3 angstroms in diameter and lined with negative charges Channel type 'B' is approximately 3 angstroms in diameter also but lined with positive charges Channel type C is approximately 4 angstroms in diameter and electrically neutral This membrane separates two...
Constants Part A The biochemistry that takes place inside cells depends on various elements, such as...
Constants Part A The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and calcium, that are dissolved in water as ions. These ions enter cells through narrow pores in the cell membrane known as ion channels. Each ion channel, which is formed from a specialized protein molecule, is selective for one type of ion. High-resolution measurements have shown that an ion channel is a 0.30-nm-diameter cylinder with length of 5.0 nm. The intracellular fluid...
A channel lined with Kentucky bluegrass is 5.5 m wide and has side slopes of m...
A channel lined with Kentucky bluegrass is 5.5 m wide and has side slopes of m = 3. The channel is at a slope of 0.001, and the top width is 15 m. (a) What is the maximum flow that can be conveyed in this channel to prevent overtopping? (b) Determine if the Kentucky bluegrass will erode if the channel if filled to its banks.
Example #1 A chicken pieces (a=1.4x10m²/s) and k=5.5(W/mk) of diameter of 2cm is initially at a...
Example #1 A chicken pieces (a=1.4x10m²/s) and k=5.5(W/mk) of diameter of 2cm is initially at a uniform temperature of 7°C, is dropped suddenly in a boiling water at 100°C and the heat transfer coefficient is 150 (W/m²K), the chicken pieces is considered to be cooked and under consumer's taste if it's center temperature is 80 °C, how long will it take the center of the pieces to be cooked?
The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and...
The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and calcium, that are dissolved in water as ions. These ions enter cells through narrow pores in the cell membrane known as ion channels. Each ion channel, which is formed from a specialized protein molecule, is selective for one type of ion. High-resolution measurements have shown that an ion channel is a 0.30-nm-diameter cylinder with length of 5.0 nm. The intracellular fluid filling the ion...
3. Water flows through a circular channel that has a diameter of d= 75 mm at...
3. Water flows through a circular channel that has a diameter of d= 75 mm at both the inlet and outlet, as shown below. The fluid enters with uniform velocity U = 7.5 m/s. The channel makes a 90° bend that distorts the flow to produce the velocity profile at the outlet described by the function, v(r) = Vmax ( 1 -722 Assume steady, incompressible flow. Density of water is 1000 kg/m² a) Find the value of Vmax. b) Find...
If a zeolite had a pore size of 8 Angstroms diameter, which molecule(s) could enter it either a) Easily (always) b) Occasionally (sometimes) c) Never H2,02, C4H10, C6H6, Hemoglobin, CH4, Isopropanol
A
certain single ion channel is selectively permeable to K+ and has a
resistance of 1.5 GI, therefore a current of potassium ions through
the channel is possible. During an experiment, the channel is open
for approximately 1.50 ms while the voltage across the channel is
maintained at 81.5 mV. How many K+ ions travel through the channel
during this time?
A certain single ion channel is selectively permeable to K+ and has a resistance of 1.15 G, therefore a...
4. Inspired by the natural design of cell membranes, you have invented a strange new semi-permeable membrane consisting of a water-impemeable base layer interspersed with hydrophilic transmembrane glycoproteins which form three types of channels. Channel type 'A' is approx imately 3 angstroms in diameter and lined with negative charges Channel type 'B' is approximately 3 angstroms in diameter also but lined with positive charges Channel type C is approximately 4 angstroms in diameter and electrically neutral This membrane separates two...
Constants Part A The biochemistry that takes place inside cells depends on various elements, such as sodium, potassium, and calcium, that are dissolved in water as ions. These ions enter cells through narrow pores in the cell membrane known as ion channels. Each ion channel, which is formed from a specialized protein molecule, is selective for one type of ion. High-resolution measurements have shown that an ion channel is a 0.30-nm-diameter cylinder with length of 5.0 nm. The intracellular fluid...
Example #1 A chicken pieces (a=1.4x10m²/s) and k=5.5(W/mk) of diameter of 2cm is initially at a uniform temperature of 7°C, is dropped suddenly in a boiling water at 100°C and the heat transfer coefficient is 150 (W/m²K), the chicken pieces is considered to be cooked and under consumer's taste if it's center temperature is 80 °C, how long will it take the center of the pieces to be cooked?
3. Water flows through a circular channel that has a diameter of d= 75 mm at both the inlet and outlet, as shown below. The fluid enters with uniform velocity U = 7.5 m/s. The channel makes a 90° bend that distorts the flow to produce the velocity profile at the outlet described by the function, v(r) = Vmax ( 1 -722 Assume steady, incompressible flow. Density of water is 1000 kg/m² a) Find the value of Vmax. b) Find...
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