Biology, 26.07.2019 03:10 jakepeavy70
Egta is a substance that binds calcium ions. imagine an experimental setup with a motor neuron and a muscle fiber. stimulation of the motor neuron causes contraction of the muscle fiber through activity at the neuromuscular junction and excitation-contraction coupling. now, inject the muscle fiber with egta. which of the following effects would egta have on excitation-contraction coupling after the neuron releases acetylcholine at the neuromuscular junction?
a) it would prevent conduction of an action potential along the sarcolemma.
b) it would prevent the junctional folds from triggering an action potential.
c) it would prevent the release of calcium ions from the terminal cisterns.
d) it would prevent myosin from forming cross bridges with actin.
Answers: 1
Biology, 22.06.2019 02:10, daniel1480
The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these
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Biology, 22.06.2019 10:50, isabelgarcia188
The small molecule cyclic amp (camp) takes about 0.2 second to diffuse 10 μm, on average, in a cell. suppose that camp is produced near the plasma membrane on one end of the cell; how long will it take for this camp to diffuse through the cytosol and reach the opposite end of a very large cell, on average? assume that the cell is 200 μm in diameter.
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Biology, 22.06.2019 16:30, CoreyHammond74901
Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.
Answers: 1
Egta is a substance that binds calcium ions. imagine an experimental setup with a motor neuron and a...
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