biology additional

Stem elongation, leaf growth, seed germination, flowering, fruit growth

Promote fruit ripening (positive feedback!); involved in apoptosis (shed leaves, death of annuals); response to mechanical stressomote fruit ripening (positive feedback!); involved in apoptosis (shed leaves, death of annuals); response to mechanical stress

Allow plant to make relatively rapid & reversible responses

Conducts H2O and minerals up from root

Can’t be broken down by “ordinary” means to another substance

Slight, fleeting attractions between atoms and molecules close together

Branch of chemistry that specializes in study of carbon compounds

WHAT ARE THE 4 MACROMOLECULES?

Molecules have same molecular formula, but differ in atom arrangement

The two Xs are on the same side.