Enzymes are proteins that are used in the body as catalysts. A catalyst is a substance that increases the rate of a reaction or decreases the rate of a reaction. Enzymes that increase reaction rates are called activators, while those that decrease reaction rates are called inhibitors. Enzymes also are responsible for signal transduction and cell regulation. Cells manufacture their energy through cellular respiration, for animal cells, and photosynthesis, for plant cells. Enzymes play an important role in both processes. Enzymes are also responsible for muscle movement, for muscular contraction and relaxation. Enzymes play a huge role in digestion, where the object is to take larger pieces of solid and semi-solid food and reduce the molecules into smaller pieces. Enzymes act as chemical scissors to cut these long chains of molecules into pieces small enough to be absorbed through the villi walls of the small intestine into the blood stream. Last, but not least, enzymes can also be involved in more exotic chemical reactions, such as the fireflys ability to generate light, by use of an enzyme called luciferinase.
GOOD QUESTION.... !!!!
♦ ENZYMES are essential till much extent
♠ they run all the metabolic activities in our body.
♠ their are more than 50 enzymes in our body
♠ in digestion many organs secreates enzymes as to digest the food so that it can be utilised by our body.
○ e.g - salivary amylase secreted salivary gland to break down carbohydrated into sugars.
○ bile juice, pancreatic juices, pepsin etc are enzymes secreted by liver, pancreas, and stomach.
♠ our growth through ducts is also dependent on enzymes.
♠ enzymes are also found in cells - in lysosomes, golgi apparatus, plasma membrane etc
♠ enzymes are too used in many LIFE PROCESSES such as respiration, excretion.
• therefore we can can conclude that enzymes are one of the most impotant substance to support life. it is helpful in metabolic activities necessary for LIFE.
SO, WE COULS SAY THAT WITHOUT ENZYMES THE ABOVE MENTIONED THING COULD NOT TAKE PLACE, AND IF THESE THINGS COULD NOT HAPPEN, NO ONE COULD SURVIVE.