Question

part 1 - general science
question
what is the function of enzymes in the human body?
a monitor responses
b move the muscles
c control the breathing rate
d speed up chemical reactions
click the button or type the letter next to your answer.

Explanation:

Enzymes are biological catalysts. Catalysts increase the rate of chemical reactions without being consumed in the process. Option A is incorrect as monitoring responses is done by the nervous or endocrine system. Option B is incorrect as muscle movement is due to muscle contraction mechanisms (actin - myosin interaction), not enzymes. Option C is incorrect as breathing rate is controlled by the respiratory center in the brain (medulla oblongata) and chemoreceptors, not enzymes. Option D correctly describes the function of enzymes as they speed up chemical reactions in the body (e.g., digestion, metabolic reactions).

Answer:

D. speed up chemical reactions