Homework Answers
Answer is None of the above.
Ionic chemical or polarised chemicals require protiens to cross.as these are charged they interact with membrane .
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An electrochemical gradient has a chemical component and an electrical component. Which of the following will...
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...
For a substance crossing a cell membrane, the chemical driving force Select one: a. depends only...
For a substance crossing a cell membrane, the chemical driving force Select one: a. depends only on the concentration gradient if the substance is uncharged, but also depends on the electrical force if the substance is an ion. b. is the force that pushes molecules across the membrane, but only if the substance is actively transported. c. depends only on the concentration gradient, regardless of whether or not the substance is an ion d. is the total driving force on...
Need help with 21- but all answers would be appreciated to check my work. Use the...
Need help with 21- but all answers would be appreciated to check
my work.
Use the scenario and figure below to answer questions 19-21 Below is a depiction of a portion of the cell membrane that is positively charged on the intracellular side and negatively charged on the extracellular side. Further, in this cell the concentration of ion X* in the intracellular space is high and in the extracellular space is low TY-]high extraccUular [X+]low Y-low 19) Does an electrical...
Considering that the Nat-K+ ATPase membrane protein is essential for maintaining an electrochemical gradient across cell...
Considering that the Nat-K+ ATPase membrane protein is essential for maintaining an electrochemical gradient across cell membranes, which of the following is likely not a component of an electrolyte solution for treating dehydration? Choose one: O Ο Α. ΑΤΡ B. potassium o C. glucose • D. sodium
The magnetic field due to the current in a long, straight wire is 8.0 mu T...
The magnetic field due to the current in a long, straight wire is 8.0 mu T at a distance of 4.0 cm from the center of the wire. What is the current is the wire? 0.20 A 0.40 A 0.80 A 1.6 A 3.2 A Draw a circuit consisting of a battery connected to two resistors, R_1 and R_2, in series with each other and a capacitor C connected across the resistors. Most extra-cellular environments contain a high concentration of...
1- The cytoplasmic side of the plasma membrane’s lipid bilayer have high concentrations of (CHOOSE THREE):...
1- The cytoplasmic side of the plasma membrane’s lipid bilayer have high concentrations of (CHOOSE THREE): a. Sphingomyelin b. Phosphatidylethanolamine c. Phosphatidylcholine d. Phosphatidylinositol e. Phosphatidylserine f. Glycolipid 2- Which of the following characteristics DOES NOT keep proteins secured to the plasma membrane? a. Transmembrane domains in the protein b. Glycosylphosphatidylinositol (GPI) anchors c. Fatty acid lipids covalently attached to the protein d. Sugar molecules covalently attached to the protein e. Associations with lipid rafts 3- Which of the following...
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion concentration of 0.00380 M inside the cell, and a concentration of 0.145 M outside t...
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion concentration of 0.00380 M inside the cell, and a concentration of 0.145 M outside the cell, what is the electrical potential across the cell membrane? Body temperature is 310 K. The sign identifies the change in the electrical potential across the membrane and which way the ions flow. (answer in mV) Answer: 696.77 Check
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a...
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion concentration of 0.00300 M inside the cell, and a concentration of 0.115 M outside t...
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion concentration of 0.00300 M inside the cell, and a concentration of 0.115 M outside the cell, what is the electrical potential across the cell membrane? Body temperature is 300 K. The sign identifies the change in the electrical potential across the membrane and which way the ions flow (answer in mV) Answer 04684 Check
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a...
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)...
Neuron celts generate electrical signals electrical potential across the cell membrane? Body temp...
Neuron celts generate electrical signals electrical potential across the cell membrane? Body temperature is 310 K. The sign idenones the change in the clectrca granents across membranes Assung a potassum k n concermation of O00250 М nside the ceu, and a concentaton of O 135 Moutsoe the cet wnat is the potentat accoss the membrane and wnich way the ions now (answer in mv) Ansner Check Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion...
Need help with 21- but all answers would be appreciated to check
my work.
Use the scenario and figure below to answer questions 19-21 Below is a depiction of a portion of the cell membrane that is positively charged on the intracellular side and negatively charged on the extracellular side. Further, in this cell the concentration of ion X* in the intracellular space is high and in the extracellular space is low TY-]high extraccUular [X+]low Y-low 19) Does an electrical...
Considering that the Nat-K+ ATPase membrane protein is essential for maintaining an electrochemical gradient across cell membranes, which of the following is likely not a component of an electrolyte solution for treating dehydration? Choose one: O Ο Α. ΑΤΡ B. potassium o C. glucose • D. sodium
The magnetic field due to the current in a long, straight wire is 8.0 mu T at a distance of 4.0 cm from the center of the wire. What is the current is the wire? 0.20 A 0.40 A 0.80 A 1.6 A 3.2 A Draw a circuit consisting of a battery connected to two resistors, R_1 and R_2, in series with each other and a capacitor C connected across the resistors. Most extra-cellular environments contain a high concentration of...
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion concentration of 0.00380 M inside the cell, and a concentration of 0.145 M outside the cell, what is the electrical potential across the cell membrane? Body temperature is 310 K. The sign identifies the change in the electrical potential across the membrane and which way the ions flow. (answer in mV) Answer: 696.77 Check
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a...
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion concentration of 0.00300 M inside the cell, and a concentration of 0.115 M outside the cell, what is the electrical potential across the cell membrane? Body temperature is 300 K. The sign identifies the change in the electrical potential across the membrane and which way the ions flow (answer in mV) Answer 04684 Check
Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a...
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)...
Neuron celts generate electrical signals electrical potential across the cell membrane? Body temperature is 310 K. The sign idenones the change in the clectrca granents across membranes Assung a potassum k n concermation of O00250 М nside the ceu, and a concentaton of O 135 Moutsoe the cet wnat is the potentat accoss the membrane and wnich way the ions now (answer in mv) Ansner Check Neuron cells generate electrical signals by concentration gradients across membranes. Assuming a potassium ion...
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