Which statement is true of the endoplasmic reticulum?
a. er is involved in the storage of food and pigments in plants.
b. er packages proteins and delivers them to other parts of the cell.
c. er are considered to be the ���brain��� of the cell.
d. er is a series of complex passageways that carry proteins throughout the cell.?

The answer is b. er packages proteins and delivers them to other parts of the cell. 

20 times a minute is usually the average respritory rate of an adult. additionally the patient is breathing on his own, is clearly maintaining his airway, and is intaking a sufficient amount of air. you shouldn't use a bag valve mask, cpap, or other form of positive pressure ventilation, unless the patient has lost control of his airway, and is not breathing (apneic) or has rapid breathing or slow and shallow respirations. this patient would most likely and should be put on an non-rebreather mask or nrb attached to 100% high flow oxygen at 15 l/min. don't use a nasal cannula, as the amount of oxygen it provides is limited with a rate of 6 l/min.