Biological molecules used by living systems to catalyze specific reactions Group of answer choices

Enzymes

Carbohydrates

Proteins

Amino Acids

Enzymes

Explanation:

Enzymes are biological molecules that catalyze specific reactions.

Enzymes are organic proteins, and are catalysts for chemical reactions, meaning that they help to speed up the reaction.

They do this by lowering the amount of activation energy needed.

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.