Question

Drag and drop the words or phrases that accurately complete the paragraph.



Enzymes are special
that help
biochemical reactions to meet the demands of the cell. Substances that are able to speed up a biochemical reaction are known as
.

proteins

nucleic acids

catalysts

speed up

slow down

inhibitors

Answer 1

Enzymes are special **proteins** that help **speed up** biochemical reactions to meet the demands of the cell. Substances that are able to speed up a biochemical reaction are known as **catalysts**.