Metabolism / Reactions
A reaction that ends in a lower free energy than it began with is called a
exergonic or catabolic reaction
The portion of the enzyme that binds to a substrate is called the:
active site
The anaerobic first step of cell respiration:
glycolysis
This pigment is found in thylakoids:
Chlorophyll
One of the 2 NFL teams that traditionally hold games on Thanksgiving Day
Lions or Cowboys
A reaction that ends in a higher free energy than it began with is called a
endergonic or anabolic reaction
Enzymes can change shape when placed in an environment with a pH or temperature that is different from the typical environment of that enzyme. This changing shape is called:
denaturing
Name a waste product of glycolysis when oxygen is not present
ethanol or lactic acid
Which reaction of photosynthesis is typically described as carbon fixation?
The Calvin Cycle
Traditionally used to make Thanksgiving pies, this gourd is rich in vitamin A
Pumpkin
The amount of energy required to start a chemical reaction. Enzymes reduce this.
activation energy
When the enzyme's active site is blocked by a molecule other than the substrate:
competitive inhibition
Name a molecule that is reduced during the Krebs cycle (citric acid cycle)
NAD+, FAD, or ADP
What two molecules are generated during the light reaction to help provide the energy needed during the calvin cycle?
NADPH and ATP
This department store's beloved Thanksgiving Day parade has been floating through New York City since 1924
Macys
Reactions that release free energy phosphorylate these molecules:
ADP
This type of enzyme regulation occurs when molecules can bind to an enzyme somewhere other than the active site and either increase or decrease its ability to bind to a substrate
Allosteric
What provides the necessary energy for the movement of protons against their concentration gradient during oxidative phosphorylation?
electron transport chain
What molecule is the output of the Calvin Cycle? (hint: it is not glucose)
G3P
In 1863 this president declared a national day of Thanksgiving to be held in November
Lincoln
What is oxidized and reduced in both photosynthesis and cellular respiration?
oxidized: glucose (cell resp) and water (photosynthesis)
reduced: oxygen (cell resp) and carbon dioxide (photosynthesis)
If the enzyme concentration is kept constant describe the effect of increasing substrate concentration on the rate of reaction:
the rate of reaction increases rapidly and then levels off because enzymes can only bind to so much substrate at once
Diet pills work by reducing the ability of protons to be moved across the inner mitochondrial membrane to create a concentration gradient. Why would this make cell resp less efficient?
Because protons need to move down their concentration gradient across ATP synthase to phosphorylate ADP molecules
How are CAM plants different from normal plants (C3 plants)?
They can complete the light and dark reactions during separate parts of the day and not simultaneously
Since 1957 this country has been celebrating Thanksgiving on the second Monday in October
Canada