Enzymes Flashcards
What is metabolism
The chemical reactions that occur in the cells of living organisms.
The maintenance of stable conditions in our bodies is called…
homestasis
name 2 types of metabolic reactions that occur in our bodies.
Anabolic and catabolic
What are enzymes?
Enzymes are catalysts made of protein, which speed up a reaction without being used up themselves.
What shape are enzymes most of the time?
globular
What factor determines what type of molecule an enzyme will react on?
-Each enzyme has a specific shape that will only fit the molecules it works on.
-The shape determines the type of molecule it will react with
Whats a substrate?
A substrate is the substance that an enzyme acts on.
Give an example of an anabolic enzyme? Explain why your chosen enzyme is anabolic?
1.DNA Polymerase is an enzyme that forms and repairs DNA.
2. It is an anabolic enzyme because it converts simple molecules into more complex molecules.
Give an example of an catabolic enzyme? Explain why your chosen enzyme is catabolic?
1.Amylase is a catabolic enzyme that converts startch into maltose.
2. It is a catabolic enzyme because it breaks the substance down into simpler parts.
Where is amylase produced?
In the salivary glands and by the panreas.
When enzymes and substrates come together they form an …
…enzyme-substrate complex.
Are enzyme reactions reversible?
yes e.g. molecule X can be broken into Y and Z, but you can also combine Y and Z into X
Whats an inhibitor?
Inhibitors attach to enzymes and destroy their shape. When this happens, they are said to be denatured.
give an example of an inhibitor
-Cyanide denatures an enzyme involved in respiration.
-Antibiotics can affect enzymes in bacteria causing them to die.
What does denatured mean?
When the shape of an enzyme is lost fully, it is said to be denatured. This is usually a permanent condition.
