PLEASE HELP MEE

1.___-they speed up chemical reactions

2.___-they only catalyze specific reactions with specific substrates, like a lock and key.

3.___-slight changes in oH or temperature can cause then to stop working

PLEASE HELP MEE 1they speed up chemical reactions 2they only catalyze specific reactions with specific substrates like a lock and key 3slight changes in oH or t class=