In a chemical reaction in a living system, enzymes are used as catalysts. which of the following statements about enzymes is incorrect? a. enzymes increase the energy of activation necessary for a chemical reaction to go forward. b. enzymes enter reactions and can be reused. c. enzymes reduce the energy of activation necessary for a chemical reaction to go forward. d. enzymes are sometimes referred to as biological catalysts; however, not all biological catalysts are proteins. e. enzymes speed up chemical reactions in living systems.

A is incorrect.

Enzymes speed up/assist in chemical reactions by DECREASING the activation energy needed for a reaction. This is what C is saying.

C. Enzymes increase the energy of activation necessary for a chemical reaction to go forward.

Instead Enzymes reduce the energy of activation, which means they reduce the amount of energy the reaction needs to start, so it can start faster

answer: - b cells

explanation: -

there are many types of white blood cells present in our body. one such class of white blood cells are the lymphocytes. the b cells belong to the lymphocyte class of wbcs. the b cells perform their action against the pathogen by producing specialised proteins called as antibodies. these antibodies are produced as and when the b cells encounter pathogens in response to the antigens present on the surface of the pathogen. these antibodies bind to the antigens present on the pathogen and then, target them for destruction by other cells of the immune system.

so, the b cells mediate their action by identifying the antigens present on the surface of the pathogens and then producing antibodies in return to mediate its effect.