Questions

RNA is not a lipid among the given options.

A lipid is a substance of biological origin that is soluble in nonpolar solvents. It comprises a group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins (such as vitamins A, D, E, and K), monoglycerides, diglycerides, triglycerides, and phospholipids.

Because there is no need address traansaction between processor and peripheral device but data bus is needed because data has to be read and write

Entity is a real world object

The organ which filters blood in human body are kidneys.