Answer:
Sterol lipids are common in human cell plasma membranes
Explanation:
Human plasma cell membrane contains sterol lipids and proteins which serves as structural maintainers of the cell.
3rd and 4th awnsers are correct
Answer: carefully suction the tracheostomy tube.
Explanation:
The light will enter they eye and it will be refracted as it
passes through the cornea. It will then pass the pupil which is controlled by
iris and will be further refracted by the lens. The cornea and lens together
will form a compound lens in order to project images which are inverted into the
retina.