Enzymes for Lecture Exam 2
Home > Preview
The flashcards below were created by user
on FreezingBlue Flashcards.
what is the decomposition rate of Hydrogen Peroxide (H2O2) by itself?
what is the decomposition rate of Hydrogen Peroxide (H2O2) with Fe filings?
When is the decomposition rate of Hydrogen Peroxide the fastest with what mixed in?
An enzyme is what type of catalase?
What is the Enzyme activity overall equation?
E + S = ES = E + P
what does the E stand for in the enzyme activity overall equation?
what does the S stand for in the enzyme activity overall equation?
what does the ES stand for in the enzyme activity overall equation?
enzyme substrate complex
what does the P stand for in the enzyme activity overall equation?
what does the allosteric effector do?
changes the shape of the active site
enzymes are classified as what?
what is the meaning of the word enzymes?
what are three ways humans use enzymes?
- - to make bread (unleavened bread; fluffier bread (CO2))
- - to make wine (alcohol)
- - sugar + yeast = alcohol + CO2
what did Büchner (1897) do?
yeast cell-free extract = still get fermentation
What did James summer (1926) do?
jack bean/ urease = protein (nobel prize)
a --> b --->c
This explains how enzymes work
what do the letters represent?
What do the arrows represent?
What is this possible for?
- letters are the organic compounds in a cell
- arrows are the possible reactions
- Possible for chaos
enzyme reaction rates are usually?
slow under mild conditions
By producing specific enzymes, which speed up specific reactions, cells cause what?
order to emerge from potential chaos
Number of substrate molecules converted to products by one enzyme molecule in one second is what?
What are the three factors that cause enzyme inactivation?
- 1. elevated temperature (proteins are complicated, fragile, molecules).
- 2. PH away from optimum pH (affects charges on protein).
- 3. Chemicals (only required in small amounts= poisons)
opitimum temperature is?
the temperature that has the fastest reaction of an enzyme
Optimum PH is?
the PH level where the fastest reaction of an enzyme occurs
many enzymes consist of a protein portion called?
what is the non-protein portion of an enzyme called?
prosthetic group or coenzyme
Many coenzymes are what?
the apoenzyme and the coenzyme make up the complete enzyme, the complete enzyme is called?
enzymes possess small amounts of ____ which is necessary for the activity of the enzyme?
metal ions or metalloenzymes
metalloenzymes are reffered to as what?
what attacks the iron of oxidizing enzymes?
CN- inhibits the human enzyme?
Because CN- has the human enzyme what are the two results?
1. cells cannot use oxygen for cellular respiration
2. the organism (obligate aerobe) dies in an “ocean” of oxygen
When an enzyme picks up the wrong coenzyme or slightly twisted one what happens?
it becomes inhibited
A _____ is necessary to all forms of life
A Folic Acid contains what?
- - consists of 3 parts: A-B-C
- - the middle part is called PABA
- - p-aminobenzoic acid is shaped something like sulfanilamide
Some germs cannot tell the difference between what?
sulfanilamide and the correct (PABA) “middle part” of folic acid.
Home > Flashcards > Print Preview