Answer:
A substance that speeds up a chemical reaction—without being a reactant—is called a catalyst. The catalysts for biochemical reactions that happen in living organisms are called enzymes. Enzymes are usually proteins, though some ribonucleic acid (RNA) molecules act as enzymes too.
Explanation:
enzymes don't change their own reaction. That's because they don't affect the free energy of reactants or the products.
Answer:
They all came from the big bang.
Explanation:
True! If any one of the two elements changes then the velocity changes.
Answer:
(First) 10,000--->1000--->100-->10 (fourth)
Explanation:
Each trophic levels gets reduced by factor of 10.
Thus if you start with 10,000 in first, then you end with 1000 in second, 100 in third and 10 in forth.
