AP BIOLOGY

Detailed explanation-1: -Temperature. At low temperatures, the number of successful collisions between the enzyme and substrate is reduced because their molecular movement decreases. The reaction is slow.

Detailed explanation-2: -This is because at low temperatures, the molecules have low kinetic energy. The low speeds of the molecules means that the rate of substrates colliding with the enzyme’s active sites is also quite low.

Detailed explanation-3: -The effect of temperature on the rate of an enzyme-catalysed reaction is the result of two opposing factors: As with any chemical reaction, the rate increases as the temperature increases, since the activation energy of the reaction can more readily be provided at a higher temperature.

Detailed explanation-4: -As with many chemical reactions, the rate of an enzyme-catalysed reaction increases as the temperature increases. However, at high temperatures the rate decreases again because the enzyme becomes denatured and can no longer function.