Eukaryotic cells all feature a nucleus, and their organelles are enclosed inside membranes.<span> They also have a plasma membrane, which is a layer of phospholipids that surrounds the whole cell, and they feature an internal cytoskeleton</span>
The right answers are 5 and 6.
The somatic nervous system is part of the peripheral nervous system <u>(part of the nervous system consisting of nerves and ganglia, and whose essential role is the transmission of information between the central nervous system - brain and spinal cord - and organs)</u>. It intervenes in the voluntary control of movements (or involuntary movements in case of reflexes, but this is different from the involuntary activities) (efferent fibers) and in the perception of external stimuli (afferent fibers).
The somatic nervous system controls the movements of skeletal muscle (which are generally voluntary) and the environmental perception, (think to the arc reflex).
The involuntary activities (proposition 1) mean automatisms like the heartbeat, respiration, secretions of hormones or sweat...
THINK OF IT THIS WAY IF WE HAVE NO CELLS IN USE WE DIE we need cells to live
