Enzymes lower activation energy through various means, including positioning substrates together in the proper orientation, applying torque on the substrates, providing the proper charge or pH microenvironment, and adding or removing functional groups on the substrates.
A scientist would use, C. Weather Balloon.
iconic bond -> sharing of many electrons
metallic bond -> sharing of electrons
covalent -> transferring of electrons
hope this helps...
Enclosed within the nucleolus of the cell.
