Describe step by step how a signal is transmitted from your brain and nervous system into an actual contraction of the muscles. Your explanation should start at the stage where the nervous system interacts with the muscles and should discuss the role of the neuromuscular junction, neurotransmitter, and motor neurons.

the correct answer is c   with the systems

idk

explanation:

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.