The electrochemical potential that is found across cell membranes can play a role in what types...
The electrochemical potential that is found across cell membranes can play a role in what types of processes?
Choose all that apply
the movement of a muscle
the uptake of molecules against a concentration gradient
the transmission of a nervous system signal
the exchange of gases between capillaries and surrounding cells
Homework Answers
Answer:
the transmission of a nervous system signal
Explanation: Differential concentration of Na+ and K+ ions across the membrane establishes membrane potential which aids in the transmission of a nervous system signal.
Add Answer to:
The electrochemical potential that is found across cell
membranes can play a role in what types...
1-what role do the steep Na+ and K+ electrochemical gradients across animal cell membranes play? 2-...
1-what role do the steep Na+ and K+ electrochemical gradients across animal cell membranes play? 2- How is the potential energy of an electrochemical gradient released?
39. Sodium-potassium pumps a. establish an electrochemical gradient across membranes b. require carrier proteins and energy...
39. Sodium-potassium pumps a. establish an electrochemical gradient across membranes b. require carrier proteins and energy c. accumulate potassium inside cells d. are important in signal transmission down axons e. all the above are true
39. Sodium-potassium pumps a. establish an electrochemical gradient across membranes b. require carrier proteins and energy c. accumulate potassium inside cells d. are important in signal transmission down axons e. all the above are true
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion of _________________ hydrocarbon tails, enabling them to stay fluid.For example, cold-adapted organisms such as winter wheat increase the percentage of _________________ phospholipids in their membranes in the autumn to prevent the membranes from solidifying during winter.There are two major populations of membrane proteins: ___________ and _____________.Integral proteins penetrate the hydrophobic interior of the lipid bilayer, usually completely spanning the membrane as ________________ proteins.________________ proteins...
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...
help with key word matching Match some of the keywords found in chapters with their correct...
help with key word matching
Match some of the keywords found in chapters with their correct definition Phospholipid Oncogene A A type of diffusion that occurs down a concentration gradient B. This process occurs during exocytosis C. A localized redistribution of ions across the cell membrane, resulting in a shift of the membrane potential (Vm) to more positive values. D. The normal function of this dass of mutant gene is "regulates the cell cycle" Channels Electrochemical The membrane potential (Vm)...
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded...
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded protein, away from water on the exterior surface of the protein, interacting with water C) in the interior of the folded protein, away from water, or in a tranomembrane portion interacting with lipid fatty acid chains D) in the transmembrane portion interacting with lipid fatty acid chains- 20) Which of the following are found in plant, animal, and bacterial cells? A) chloroplasts C) ribosomes...
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...
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...
8. The movement of protons out of the mitochondrial matrix establishes an electrochemical H gradient across...
8. The movement of protons out of the mitochondrial matrix establishes an electrochemical H gradient across the inner mitochondrial membrane. The electrochemical potential of this gradient is harnessed to synthesize ATP. This is known as the (A) Hydrophobic effect IqChemiosmotic theory (B) Acid catalysis (0) Michaelis-Menten mechanism _9. Which of the following statements about mitochondria and their lon and metabolite transporters is FALSE? (A) Controlled impermeability of the inner mitochondrial membrane to most ions and metabolites allows for the generation...
For each multiple choice, what is the answer and why? 5. Myelin A) is only found...
For
each multiple choice, what is the answer and why?
5. Myelin A) is only found in the peripheral nervous system B) is secreted from the axon terminals of autonomic neurons. C) is a carbohydrate within the membranes of some neuroglia. D) is a chemical present in the plasma membrane of neurons. E) influences the rate of conduction of an electrical signal down an axon. 6. Which of the following organs/structures is (are) innervated by somatic motor nerves? (only ONE...
39. Sodium-potassium pumps a. establish an electrochemical gradient across membranes b. require carrier proteins and energy c. accumulate potassium inside cells d. are important in signal transmission down axons e. all the above are true
39. Sodium-potassium pumps a. establish an electrochemical gradient across membranes b. require carrier proteins and energy c. accumulate potassium inside cells d. are important in signal transmission down axons e. all the above are true
help with key word matching
Match some of the keywords found in chapters with their correct definition Phospholipid Oncogene A A type of diffusion that occurs down a concentration gradient B. This process occurs during exocytosis C. A localized redistribution of ions across the cell membrane, resulting in a shift of the membrane potential (Vm) to more positive values. D. The normal function of this dass of mutant gene is "regulates the cell cycle" Channels Electrochemical The membrane potential (Vm)...
here would you expect to find a bedrophhobic amino acld like valine? hor of the folded protein, away from water on the exterior surface of the protein, interacting with water C) in the interior of the folded protein, away from water, or in a tranomembrane portion interacting with lipid fatty acid chains D) in the transmembrane portion interacting with lipid fatty acid chains- 20) Which of the following are found in plant, animal, and bacterial cells? A) chloroplasts C) ribosomes...
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...
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...
8. The movement of protons out of the mitochondrial matrix establishes an electrochemical H gradient across the inner mitochondrial membrane. The electrochemical potential of this gradient is harnessed to synthesize ATP. This is known as the (A) Hydrophobic effect IqChemiosmotic theory (B) Acid catalysis (0) Michaelis-Menten mechanism _9. Which of the following statements about mitochondria and their lon and metabolite transporters is FALSE? (A) Controlled impermeability of the inner mitochondrial membrane to most ions and metabolites allows for the generation...
For
each multiple choice, what is the answer and why?
5. Myelin A) is only found in the peripheral nervous system B) is secreted from the axon terminals of autonomic neurons. C) is a carbohydrate within the membranes of some neuroglia. D) is a chemical present in the plasma membrane of neurons. E) influences the rate of conduction of an electrical signal down an axon. 6. Which of the following organs/structures is (are) innervated by somatic motor nerves? (only ONE...
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