How are molecules and compounds related? ? someone me with this one

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

The ammonia molecule in the diagram has the observed bond orientation because