Answer:
fatty acid and lipids
Explanation:
buttons always drop down this is easy kids
DNA helicase untwists the helix at the replication origins. Then the DNA is seperated into a "Y" shape called the replication fork.
Potential energy or stored energy.
Answer:
the mass of the system must remain constant over time
Explanation:
In other words matters cannot be created or destroyed, the overall amount will remain the same