Metabolic acidosis may be associated with:

A. Insulin promotes fat storage and inhibits the breakdown of lipids. Therefore, insulin release would not increase lipid breakdown.

B. Insulin decreases blood glucose levels by facilitating the uptake of glucose into cells for energy production and storage. Insulin does not increase blood glucose levels; it lowers them.

C. Insulin promotes protein synthesis and inhibits protein breakdown, so it would not increase protein breakdown.

D. Insulin lowers blood glucose levels by enhancing glucose uptake into cells, making it the correct answer.

A. Meconium ileus is a common early sign of cystic fibrosis in newborns. It occurs when the meconium, which is the first stool of a newborn, becomes thick and sticky, leading to a blockage in the intestines. This is often one of the first signs of cystic fibrosis in infants.

B. Cyanosis, while indicative of oxygenation problems, is not a specific sign of cystic fibrosis in newborns. It may be seen in many respiratory or cardiac conditions.

C. Yellow, seedy, loose stools are more commonly associated with normal newborn digestion or conditions like lactose intolerance or gastrointestinal infections, not specifically cystic fibrosis.

D. Coughing is a symptom of cystic fibrosis, but it typically develops later as the disease progresses and affects the lungs, rather than being an early sign in newborns.