1. which of the following plant growth regulators is not produced commercially?
a. abscisic acid
b. ethylene
c. auxins
d. cytokinins

I'll look more into it, but it's either C or D

Explanation:

Auxins: Auxin is a plant hormone produced in the stem tip that promotes cell elongation

Cytokinins: Cytokinins promote cell division. They are produced in growing areas, such as meristems at tip of the shoot. Zeatin is a hormone in this class, and occurs in corn (Zea ).

the function of the protein macromolecule is to move things in and out of the cell and transport other molecules in the body. there are many functions of proteins. they are the basic building blocks of living things and are responsible for the growth and repair of body cells and tissues.

explanation:

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.