Answer alpine
Explanation: ive done this many a times
Amylase, lactase, and pepsin serve as catalysts in metabolism.
I hope this helps!
B) Yes, all organisms use DNA for the production of proteins.
Since the wheelbarrow is filled with soil, that adds more weight to it. Which means you would need to use more strength/force.
When the wheelbarrow is empty, it has less weight so you would use less force.