Which is true about enzymes?
question 10 options:

they act on nonspecific, randomly chosen substrates.

after a reaction, they cannot be reused.

they can speed up metabolic processes in the body.

they cannot change shape.

do not guess i really need to get this right! < 3

They can speed up metabolic processes in the body

Explanation:

Enzymes are specific in action

They are protein in nature

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only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.