Which of the following have the function of accelerating the rate of chemical reactions but are not altered in the process? Enzymes
Vitamins
Emulsifiers
Proteins

the answer is A. Enzymes

sure. but could you me with my question? ?

absolute strength refers to the maximum force exerted by a body irrespective of body size. relative strength on the other hand is the force exerted by a body in relation to muscle size or body weight.

so the answer is: c. absolute strength measures strength regardless of your body size, while relative strength measures strength adjusted for your weight.