1. when a catalyst is missing from a chemical reaction, what happens to the reaction?

The rate of the reaction slows down.

Explanation:

A catalyst speeds up a chemical reaction by decreasing its activation energy. Reactants have a range of energies, and only those with energies above the activation energy of the reaction are able to undergo the reaction. By lowering the activation energy, more reactants will have energies above it, enabling them to undergo the reaction.

one is through turgidity. this occurs before ground tissue ( collenchyma

and sclerenchyma cells) become well

developed to give structural support to the plant as it grows bigger. the xylem

tissue (composed of rigid tissue) of the young

plant render this support and also maintaining osmotic turgidity of the surrounding

plant cells.