At a neruomusclular junction involving skeletal muscle, the acetylcholine receptor is a ______ channel.
A. voltage-gated Na+
B. anion
C. cation
D. two of the above
Answer: C. cation
Biology & Microbiology
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To date, more than 300 plant genomes have been partially or fully sequenced
Indicate whether the statement is true or false.
Biology & Microbiology
A condition in which wheezing occurs with breathlessness and a persistent cough, and yields yellowish or greenish phlegm is
A) asthma. B) bronchitis. C) lung cancer. D) lupus. E) anemia.
Biology & Microbiology
Unlike other epithelia the epithelia that make up the capillaries have holes in them called fenestrations.
a. true b. false
Biology & Microbiology
Transcriptional control that acts by regulating the continuation of transcription is called:
A. antitermination. B. riboswitching. C. negative control. D. attenuation. E. operator mutation.
Biology & Microbiology