Which of the following statements concerning enzymes is false? a) they are usually, but not always, proteins. b) they function best at 37°c. c) they can be denatured if the ph of their environment is too high or too low. d) they form a temporary intermediate compound with a substrate. e) they can be used to catalyze a chemical reaction over and over again.

D. The form a temporary intermediate compound with a substrate

Explanation:

This is the only answer I do not remember learning in Biology.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

condensation. good luck!