2. Enzymes can act as organic catalysts in living things. How do enzymes affect reaction rates in cells? A They slow down cellular reactions by inhibition.
B They speed up cellular reactions by providing a site for substrates to react.
C They speed up cellular reactions by providing energy to the reactants.
D They slow down cellular reactions by lowering the reaction temperature.​

Asap i will reward you brainliest for best which sentence about protists is accurate? all protists are unicellular and microscopic in nature. they have organelles, so protists are eukaryotic in nature. all protists make their own energy through photosynthesis.

Paint and solvents pose no potential hazard to human health. select the best answer from the choices provided t f

Which of the following best describes the purpose of the parathyroid hormone? a. it decreases the blood calcium level and decreases blood phosphorus level. b. it decreases the blood calcium level and increases the blood phosphorus level. c. it increases the blood calcium level and increases blood phosphorus level. d. it increases the blood calcium level and decreases blood phosphorus level.