Catalysts
Heat helps chemical reactions to take place. Light can also cause some chemical reactions to take place.
Chemical reactions such as hydrolysis or combustion can weaken high energy bonds by breaking them and releasing energy. Enzymes can also be involved in catalyzing these reactions to lower the activation energy required to break the bonds.
Chemical reactions occur when reactant molecules collide with enough energy and proper orientation to overcome the activation energy barrier. Factors such as increasing temperature, using a catalyst, and adjusting reactant concentrations can all help facilitate chemical reactions by providing more energy for collisions or altering the reaction pathway.
Enzymes are the type of macromolecule that helps a cell break down food. Enzymes act as catalysts to speed up chemical reactions that break down large molecules into smaller ones that can be used by the cell for energy or growth.
Activation energy to break chemical bonds is provided by an external energy source, typically in the form of heat or light. This additional energy helps overcome the energy barrier required to break the existing bonds and initiate a chemical reaction.
This is the digestion process.
Two kind of chemical reactions are exothermic and endothermic reactions. An exothermic reaction is one that releases energy. An endothermic reaction is one that absorbs energy. Hope this helps!! :)
A substance that helps chemical reactions is called a catalyst. It speeds up the rate of a reaction by providing an alternative pathway with lower activation energy. Catalysts are not consumed in the reaction and can be used repeatedly.
The threshold energy in chemical reactions is the minimum amount of energy required for a reaction to occur. It is significant because if the reactants do not have enough energy to reach this threshold, the reaction will not proceed. This concept helps us understand the conditions under which reactions can take place and how to control and optimize them.
Sunlight provides the energy needed to drive the reaction and activate the molecules involved in the process. It helps break down reactants and form products by providing the necessary energy for chemical reactions to occur.
heat
Water is needed for cellular respiration because it is a key component in the chemical reactions that break down glucose and produce energy for the cell. Water helps to facilitate these reactions and is essential for the overall process of cellular respiration to occur efficiently.