Mercury would bind to the mer operon to act as an activator whereas the less toxic products from the pathway would acts as a repressor.
Answer:
Explanation:
The first mass extinction is called the Ordovician-Silurian Extinction. It occurred about 440 million years ago, at the end of the period that paleontologists and geologists call the Ordovician, and followed by the start of the Silurian period. In this extinction event, many small organisms of the sea became extinct.
Answer:
Covalent Bonds
Explanation:
The nature of the interaction between the atoms depends on their relative electronegativity. Atoms with equal or similar electronegativity form covalent bonds, in which the valence electron density is shared between the two atoms.
Answer:
increasing number of neutrons from left to right
