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What is a substance on which an enzyme acts?
Enzymes are biological molecules that catalyze (i.e., increase the rates of) chemical reactions.In enzymatic reactions, the molecules at the beginning of the process, called substrates, are converted into different molecules, called products.Almost all chemical reactions in a biological cell need enzymes in order to occur at rates sufficient for life. Since enzymes are selective for their substrates and speed up only a few reactions from among many possibilities, the set of enzymes made in a cell determines which metabolic pathways occur in that cell.
The reason why an enzyme fits a specific substrate is due to its?
The reason why an enzyme fits a specific substrate is due to its 3rd dimensional shape. Enzymatic competition involves competition among several different available enzymes to combine with a given substrate material.
How do inhibitors regulate enzymes?
Competitive inhibition: Where an inhibitor, which has a similar molecular shape to the enzyme's substrate, competes with substrate to fit to the enzymes active site. In the end all substrate can be broken down because the competitive inhibitors are not permanently bonded to the enzymes active site. If there is a higher concentration of substrate the amount of time it will take for all the substrate to be broken down will be less than if there is a higher concentration of inhibitor. Non-competitive inhibition: Where the inhibitor attaches itself to the enzyme at a site which is NOT the active site. This causes the enzymes shape to be changed slightly which would mean that the substrate is unable to fit to the active site. Non-competitive inhibitors do no compete with the substrate for the active site, hence their name. Non-competitive inhibitors may be permanent or not. Because the inhibitor and substrate are not competing for the same site an incrase in substrate concentration does not decrease the inhibitors effect.
Which enzyme exhibits the highest catalytic efficiency among all known enzymes?
The enzyme carbonic anhydrase exhibits the highest catalytic efficiency among all known enzymes.
What does the budget of the US government represent?
An agreement among various politicians about public spending.
Which process in a human requires that enzymes be secreted into gastrointestinal tract?
Chemical digestion in humans requires enzymes to be secreted into the gastrointestinal tract. These enzymes are produced by the pancreas and stomach, among other organs.
How is the active site of enzyme formed?
Enzymes are proteins and as such, they undergo complex folding of the amino acid chain. They form globules, helices and sheets, among other structures. The pockets formed by such structures containing a functional group responsible for the reaction forms an active site.
What if your job among enzymes on the DNA replication team is to keep single DNA strands from?
C. straightener
Where do freshwater mussels live?
Freshwater mussels typically live in rivers, streams, lakes, and ponds. They are found in various habitats including sandy substrate, gravel beds, and among aquatic vegetation. Freshwater mussels are filter feeders and play an important role in maintaining water quality.
What are the conflict among the various stake holder?
What are the conflict among the various stake holder?In: http://wiki.answers.com/Q/FAQ/468[Edit categories] [Improve]
What group of molecules are enzymes?
Most enzymes are proteins. Almost all chemical reactions in a biological cell need enzymes in order to occur at rates sufficient for life. Since enzymes are selective for their substrates and speed up only a few reactions from among many possibilities, the set of enzymes made in a cell determines which metabolic pathways occur in that cell. Enzymes are known to catalyze about 4,000 biochemical reactions.
What are three statements that describe an enzyme?
1. It is not used up and does not change shape in a reaction. 2. It is used to speed up a reaction 3. Will only bind to another molecule as long as the enzyme substrate complex can form(see lock and key theory)
