<span>A protein digesting enzyme would make meat more tender by breaking down long fibrous protein chains into shorter protein chains. Just as piercing a tough piece of meat many times with a thin blade will cut long protein fibers into shorter, more tender fibers, an enzyme will do the same type of cutting, but on a microscopic level.</span>
Motor neurons are involved in the skeletal muscle contractions in vertebrates, as the process is a synaptic one. These occur due to a conscious effort by the brain, from which these signals originate. In some reflexes, the signal originates from the spinal cord.
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so what's the question asking? does she want to know how much? or the necessary items?
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Well for one, a dogs sperm couldn't fertilize a cats egg and vice versa. Their breeding behaviors, heat cycles, and different DNA prevent them from being able to produce healthy, viable offspring.
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