Homework Answers
Active transporter will be useful in this case. As the concentration of potassium must be high inside the cell in comparison to outside, so there must be flow of potassium against the concentration gradient. The sodium potassium pump transport 2 potassium ions inside the cell and 3 sodium ions moves out of the cell. ATP is required in the process. One ATP molecule is utilized for transport of two potassium ions inside the cell and 3 sodium ions outside of the cell.
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Muscle cells require a high internal concentration of potassium (K). Suppose you took a potassium supplement...
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...
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...
Given these parameters, what is the AG for K ion transport into the frog muscle cell...
Given these parameters, what is the AG for K ion transport into the frog muscle cell in the presence of Ach? Dr. Knowsalot smiles and nods. "Good," she says. "Now let's see whether K+ ions pass through the open Ach receptors into the cell. As you might remember, these channels are permeable to Na+, K+, and Ca2+. For a typical frog muscle cell, the concentration of K+ is roughly 124 mM inside the cell and 2.30 mM outside the cell."...
Many cells take up molecules against their concentration gradients: the molecules are more concentrated inside the...
Many cells take up molecules against their concentration gradients: the molecules are more concentrated inside the cell than outside. Amino acids are frequently transported in this fashion. For the question below, think about intestinal cells growing in medium that is equivalent to blood. The concentration of amino acids is higher in the cell's cytoplasm than in the medium outside the cell. Please indicate whether each of the following modes of transport would permit amino acid uptake into the cell. For...
Pu010 2. You are studying a bacterial protein, Pmp 7, that pumps one potassium (Kt) ion...
Pu010 2. You are studying a bacterial protein, Pmp 7, that pumps one potassium (Kt) ion into the cell for each calcium ion (Ca²+) that is moved out of the cell. Pmp 7 uses energy from light to pump these ions across the membrane. Experiment 1: You make an artificial membrane vesicle that has Pmp7 as the only protein on the membrane. Pmp 7 is orientated on this artificial membrane vesicle as it is oriented in a bacterial cell, and...
What more info do you need? This is all I've been provided. 1. Intestinal epithelial cells...
What more info do you need? This is all I've been provided.
1. Intestinal epithelial cells pump glucose into the cell against its concentration gradient using the Na-glucose symporter. Recall that the Na concentration is significantly higher outside the cell than inside the cell. The symporter couples the "downhill" transport of two Na' ions into the cell to the "uphill" transport of glucose into the cell. (opts) a. If the Na concentration outside the cell ([Na Jou) is 161 mM...
Discard the answers I chose Match the following scenarios with the most specific type of transport...
Discard the answers I chose
Match the following scenarios with the most specific type of transport used. Some choices may be used more than once. A A white blood cell enguits a bacterial cell A A paramecium swims close to some debris, wraps its membrane around the debris, and pulsit inside, creating a food Vacuole D. An amoeba wraps its cell membrane around a region of dissolved nutrients in water and pulls it inward, making a small vacuole A Phagocytosis...
You have isolated the Na/K-ATPase in a semi-purified membrane system. Given higher concentrations of Na' out...
You have isolated the Na/K-ATPase in a semi-purified membrane system. Given higher concentrations of Na' out and higher K inside, addition of ATP to the inside leads to increases of Nat olutside and Kt inside as expected. If instead, you add the ATP to the outside of the membrane, you don't see any change in the ion levels. Why? • ATP acts as an irreversible inhibitor of the Na/K-ATPase if it binds on the exterior side. The active site for...
1. You have identified a new protein and predict it is a transmembrane protein due to...
1. You have identified a new protein and predict it is a transmembrane protein due to its AA sequence analysis. How would determine where the protein is located in the cell? A. Extract all the proteins from the cell and analyze them on a protein gel. B.Use Polymerase Chain Reaction (PCR) to amplify the protein. C. Use an fluorescent antibody to the protein and allow it to bind to the cells. D Isolate the RNA for the protein and use...
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...
Given these parameters, what is the AG for K ion transport into the frog muscle cell in the presence of Ach? Dr. Knowsalot smiles and nods. "Good," she says. "Now let's see whether K+ ions pass through the open Ach receptors into the cell. As you might remember, these channels are permeable to Na+, K+, and Ca2+. For a typical frog muscle cell, the concentration of K+ is roughly 124 mM inside the cell and 2.30 mM outside the cell."...
Pu010 2. You are studying a bacterial protein, Pmp 7, that pumps one potassium (Kt) ion into the cell for each calcium ion (Ca²+) that is moved out of the cell. Pmp 7 uses energy from light to pump these ions across the membrane. Experiment 1: You make an artificial membrane vesicle that has Pmp7 as the only protein on the membrane. Pmp 7 is orientated on this artificial membrane vesicle as it is oriented in a bacterial cell, and...
What more info do you need? This is all I've been provided.
1. Intestinal epithelial cells pump glucose into the cell against its concentration gradient using the Na-glucose symporter. Recall that the Na concentration is significantly higher outside the cell than inside the cell. The symporter couples the "downhill" transport of two Na' ions into the cell to the "uphill" transport of glucose into the cell. (opts) a. If the Na concentration outside the cell ([Na Jou) is 161 mM...
Discard the answers I chose
Match the following scenarios with the most specific type of transport used. Some choices may be used more than once. A A white blood cell enguits a bacterial cell A A paramecium swims close to some debris, wraps its membrane around the debris, and pulsit inside, creating a food Vacuole D. An amoeba wraps its cell membrane around a region of dissolved nutrients in water and pulls it inward, making a small vacuole A Phagocytosis...
You have isolated the Na/K-ATPase in a semi-purified membrane system. Given higher concentrations of Na' out and higher K inside, addition of ATP to the inside leads to increases of Nat olutside and Kt inside as expected. If instead, you add the ATP to the outside of the membrane, you don't see any change in the ion levels. Why? • ATP acts as an irreversible inhibitor of the Na/K-ATPase if it binds on the exterior side. The active site for...
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