Enzymes are catalysts that affect biological reactions. How do enzymes change the rates of reactions in the body?
A. Enzymes increase reaction rates by lowering the activation energy.
B. Enzymes decrease reaction rates by lowering the activation
energy
C. Enzymes decrease reaction rates by decreasing the energy of the
products.
D. Enzymes increase reaction rates by increasing the energy of the
reactants.

Listen base your answer to the question on the information below. propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below. c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol. what is the correct structural formula for a molecule of methanethiol

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

Many pharmaceutical drugs are organic compounds that were originally synthesized in the laboratory. which two scientific disciplines are bridged by pharmaceutical drugs? chemistry and forensics chemistry and medicine biology and forensics biology and criminology