The substance on which the enzyme acts is called the
a. enzyme
b. substrate
c. catalyst
d. buffer

What re the two main phrases of the cell cycle.

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley

Which best describes meiosis? a. it produces cells that are identical to the original cell b. it is responsible for the replacement of damaged skin cells c. it is responsible for growth of the organism d. it produces male and female sex cells