APFIVE Ligand Gated Ion Channels And Muscle Contraction
In an experiment on muscle contraction, a ligand known to open sodium channels is applied to a sample of muscle cells. No contraction is observed, even though the ligand concentration and application method were confirmed to be correct. Which of the following is the most plausible explanation for this outcome?
A
The muscle cells might lack the specific ligand-gated ion channels for sodium.
B
The experiment did not include a control group for comparison.
C
The temperature at which the experiment was conducted was too low.
D
The ligand was not compatible with the type of muscle cells used.
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