Question

2 multiple answer 8 points
select the answers below that are true about enzymes: (choose all that apply)
□ nucleic acids
□ can be used up and permanently changed
□ proteins
□ are twisted and folded into 3 - dimensional shapes
□ are long, 2 - dimensional strings
□ are not used up or permanently changed, are re - used.
□ catalysts that speed up reactions inside of cells

Explanation:

Enzymes are proteins (not nucleic acids). They act as catalysts to speed up reactions in cells. They are not used up or permanently changed and can be reused. Proteins (enzymes) have a 3 - dimensional structure due to twisting and folding (not 2 - dimensional strings).

Answer:

Proteins, are twisted and folded into 3 - dimensional shapes, are not used up or permanently changed, are re - used, catalysts that speed up reactions inside of cells.