A haploid cell is one that contains one set of complete chromosomes.
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: A. The sun is located at the centre of the universe
Answer:
Proteins are the Body's Worker Molecules
Explains structure-function relationship, amino acids, protein folding, genetic code, sickle cell and CF, and computer modeling.
