<span>In cells, enzymes are proteins that are needed to lower the amount of energy required to start chemical.</span>
Enzymes are biological catalysts which accelerate chemical reactions (reactions are millions of times faster than without them). Every enzyme has an active site which binds substrates and converts them into products.
Answer:
a flower has a complex structure
Explanation:
Stronger. The sun has an immense gravitational pull that drags planets into orbit and keeps them orbiting for millions and millions of years.
