When a bond forms between units of a macromolecule, a water molecule is lost. what is this process called?

The process called dehydration synthesis.

Explanation:

Macromolecules are mostly made from single subunits, called monomers. The monomers combine with each covalent bond to create larger molecules.

Monomers release water molecules in this process as byproducts. This reaction is known as dehydration synthesis. Since two monomers are condensed to form one larger molecule, considered to be a condensation reaction with the loss of a smaller molecule.

Thus, The process called dehydration synthesis.

the right side of the picture going down is:

polymerase

protein

transport vesicle

modified protein

the left side of the picture going down is:

dna helix

single-stranded rna

endoplasmic reticulum

ribosome

golgi apparatus

protein released from vesicle

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