Reactions
Enzymes 101
Organic Catalysts
Enzymes: True or False
Graphing
Trivia
100
What is a chemical reaction?
a process that changes one set of molecules into a new set of molecules
100
The relationship between an enzyme and a substrate is often called the "lock and key" model. What is this model describing?
How the substrate fits perfectly into the active site of the enzyme
100
What type of biological compound (macromolecule) are enzymes?
Enzymes are proteins
100
True or False?
Enzymes are lipids that speed up the chemical reactions within a cell
False! They are proteins
100
When you are graphing two lines on a graph, what else needs to be included with the normal labels?
A key
100
Edward Cullen is the name of a character in which popular book and movie series?
Twilight
200
What is the difference between "reactants" and "products"?
Reactants are what enters a chemical reaction, while products are what is produced by the reaction.
200
What role does an enzyme play in the reactions that occur within cells?
Enzymes make the reactions within cells take place faster and at lower temperatures.
200
What 3 letter postfix can we expect to find at the end of an enzyme's name?
-ase
200
True or False?
If two substances will not react, adding an enzyme will make a chemical reaction occur.
False! Enzymes only speed up reactions
200
Draw and label the axis of a graph representing enzyme reaction rate based on temperature.
200
What is the only mammal capable of flying?
(floating doesn't count!)
bats!
300
What is activation energy?
Activation energy is the amount of energy that must be absorbed by the reactants in order to break the bonds holding the reactant molecules together.
300
In the reaction below, what letter represents an enzyme?
XY + RS + V ---> XYRS + V
V
300
What are two things that might cause an enzyme to denature?
temperature and pH
300
True or False?
Enzymes make reactions take place faster and at lower temperatures.
True!
300
Graph A represents what type of reaction?
Endothermic (the products have more energy than the reactants)
300
What are the names of the 3 Sanderson sisters in the movie "Hocus Pocus"?
Winifred, Sarah and Mary
400
What is a substrate?
a reactant in an enzyme mediated reaction
400
Where do noncompetitive inhibitors bind on an enzyme?
the allosteric site
400
True or False?
Enzymes often “wear out” and are consumed by the chemical reaction.
False! Enzymes can be used multiple times before they are recycled by the cell.
400
True or False?
Cells can live with or without enzymes
False! Cell reactions are too slow to happen on their own.
400
Based on the graph above, what is the optimal temperature for the enzyme?
~35 degrees Celcius
400
What is another name for a "lycanthrope"?
Werewolf
500
During a __________ reaction, products will absorb energy from the reaction.
Endothermic
500
Enzyme molecules normally interact with substrate molecules. Some medicines work by blocking
enzyme activity in pathogens through competitive inhibition. Explain how this works.
The medication blocks the active site of the enzyme preventing the substrate from binding.
500
Which color line most likely represents an enzyme catalyzed reaction?
Green (lower activation energy)
500
True or False?
Enzymes are very specific and can carry out only one reaction.
True! Lock and key model-1 enzyme for 1 substrate
500
What are enzyme A's optimal conditions?
45 degrees Celsius and 5 pH
500
Where did Halloween originate?
Was originally a Celtic festival called Samhain, celebrated in 600 AD in what's now Scotland.