Which of these cells of the dermal tissue of plants prevent water loss and control gas exchange?
a phloem cells
b companion cells
c parenchyma cells
d guard cells
if you answer it right and fast i will mark you as brailenist

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

How can you tell the difference between rough er from smooth er?

What property of water provides for appropriate sugar, salt, and amino acid levels to be present and carried in the blood of animals to be delivered to cells