BCMB 311 Exam 3 - UTK Questions with Verified
Correct Answer
What is the difference between catabolism and anabolism?
Catabolism is the BREAKDOWN of large molecules into smaller ones; energy is typically
RELEASED
Anabolism is the SYNTHESIS of large molecules from smaller ones; energy is typically
ABSORBED
When talking about kcal/mol, if energy is released it is -, if energy is absorbed then it is +.
What is a metabolic pathway?
A series of chemical reactions in which the product of one reaction is the substrate for the next
reaction
- Can be linear or cyclic
What pathways did we discuss that are linear?
Glycolysis
What pathways did we discuss that are cyclic?
Citric acid cycle
What is the difference between ATP and ADP?
, ATP is the primary energy-carrying molecule; ADP is very similar in form, just missing a
phosphate group.
Phosphorylation turns ADP to ATP (Adds phosphate group, going from 2 in ADP to 3 in ATP)
Fuel from sugars and other carbon-containing foods captures energy in a stepwise
oxidation, why is this important?
The result of sugar oxidation is reducing NAD to NADH and FAD to FADH2. These new
reduced molecules can generate ATP by donating electrons to oxygen from H2O.
- Stepwise means some free energy is stored in activated carriers by enzymes and NAD/FAD
What is a hydrolysis reaction?
Any chemical reaction in which a molecule of water breaks one or more chemical bonds; Adds
OH-; results in ADP and a phosphate group
What does the hydrolysis of ATP result in?
ADP + Pi + Energy
How much energy is released from the reaction that cleaves 1 phosphate group from ATP?
This creates ADP; 7.3 kcal/mol
What is the most oxidized form of carbon?
Carbon dioxide (co2)
How many carbons does the glucose molecule have? How does this influence the total
outcome of the electron transport chain (oxidative phosphorylation)?
Correct Answer
What is the difference between catabolism and anabolism?
Catabolism is the BREAKDOWN of large molecules into smaller ones; energy is typically
RELEASED
Anabolism is the SYNTHESIS of large molecules from smaller ones; energy is typically
ABSORBED
When talking about kcal/mol, if energy is released it is -, if energy is absorbed then it is +.
What is a metabolic pathway?
A series of chemical reactions in which the product of one reaction is the substrate for the next
reaction
- Can be linear or cyclic
What pathways did we discuss that are linear?
Glycolysis
What pathways did we discuss that are cyclic?
Citric acid cycle
What is the difference between ATP and ADP?
, ATP is the primary energy-carrying molecule; ADP is very similar in form, just missing a
phosphate group.
Phosphorylation turns ADP to ATP (Adds phosphate group, going from 2 in ADP to 3 in ATP)
Fuel from sugars and other carbon-containing foods captures energy in a stepwise
oxidation, why is this important?
The result of sugar oxidation is reducing NAD to NADH and FAD to FADH2. These new
reduced molecules can generate ATP by donating electrons to oxygen from H2O.
- Stepwise means some free energy is stored in activated carriers by enzymes and NAD/FAD
What is a hydrolysis reaction?
Any chemical reaction in which a molecule of water breaks one or more chemical bonds; Adds
OH-; results in ADP and a phosphate group
What does the hydrolysis of ATP result in?
ADP + Pi + Energy
How much energy is released from the reaction that cleaves 1 phosphate group from ATP?
This creates ADP; 7.3 kcal/mol
What is the most oxidized form of carbon?
Carbon dioxide (co2)
How many carbons does the glucose molecule have? How does this influence the total
outcome of the electron transport chain (oxidative phosphorylation)?
