Answer:
<u>Structure G</u> is Option (c) : Vacuole
Excitation-contraction coupling refers to the series of events that begins with the excitation of the sarcolemma in response to stimulation by a neurotransmitter, and results in the release of calcium ions from the sarcoplasmic reticulum.
Hence, option D is the 1st process that starts the excitation-contraction coupling.
Answer:
What are the options and what are the different celestial bodies?
Explanation:
you can't expect someone to fully answer a question where they need more information to answer it in the first place> if you edit your answer, you should be able to add those needed pieces of information to the question!
that or you might get flagged for having a confusing or incomplete answer, i wouldn't do that i'm just warning you for future reference!
Echinoderms are most closely related to chordates because both are: <span>D)Ectotherms</span>
