Which statement is true of enzymes? choose 1 (choice a, checked)
a
enzymes work independent of substrate concentration.

(choice b)
b
the activity of an enzyme might change as ph changes.

(choice c)
c
changes in temperature do not affect enzymes.

(choice d)
d
enzymes are non-specific.

The answer is B. Enzymes have optimum temperatures, and are very specific. If substrate concentration is 0, enzymes will not work.

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.

the answer u all are looking for is 4000000000000000000000 million years.