Who answers the key economic questions in a centrally planned economy? governments, households, firms, or consumers

The correct oprion is: "Governments"

The Central Planning Economy is defined as a type of economic system, characteristic of the communist countries, where the State owns and controls all production, especially industrial capital. The economies that adopted this type of economic system are also characterized by an economic planning centralized in the State, which also determines many important economic variables such as the price of the various goods, production levels, etc.

answer: are there any

explanation:

the of atp are the key to its ability to store and supply energy;

phosphate

the phosphate groups of atp are the key to its ability to store and supply energy. atp releases energy when it breaks bonds between its phosphate groups.