TTU Bio 1403 Final Exam Questions &
Answers (Grade A+)
What occurs in a human muscle cell when there is no oxygen and
all electron carriers are fully reduced? -
correct answer ✅Pyruvate is reduced to regenerate NAD+.
Pyruvate kinase mediates the final reaction of glycolysis. Pyruvate
kinase is activated by fructose 1,6-bisphosphate (FBP), which is an
earlier product within glycolysis. Pyruvate kinase is regulated by
what regulation mechanism? -
correct answer ✅Feedforward stimulation
ATP inhibits an enzyme that catalyzes a reaction within glycolysis
called phosphofructokinase-1 (PFK1). ATP inhibits PFK1 by binding
to it outside of the active site. In this scenario, ATP is an example of
a what? -
correct answer ✅Allosteric inhibitor
What happens to carbon atoms during aerobic cellular respiration?
-
correct answer ✅They are fully oxidized and released as carbon
dioxide
, TTU Bio 1403 Final Exam Questions &
Answers (Grade A+)
What is the function of the electron transport chain? -
correct answer ✅Create a proton [H+] gradient across the inner
mitochondrial membrane
Overall, energy is captured from glycolysis as -
correct answer ✅ATP and NADH
The role of oxygen in cellular respiration is to... -
correct answer ✅Accept low-energy electrons
Three chains of hydrocarbons with a carboxyl group at one end are
attached to a glycerol. What macromolecule is this? -
correct answer ✅Lipid
Ribonucleotides are bound together through phosphodiester
bonds. What macromolecule is this? -
correct answer ✅RNA
Amino acids are bound together through peptide bonds. What
macromolecule is this? -
correct answer ✅Protein
Answers (Grade A+)
What occurs in a human muscle cell when there is no oxygen and
all electron carriers are fully reduced? -
correct answer ✅Pyruvate is reduced to regenerate NAD+.
Pyruvate kinase mediates the final reaction of glycolysis. Pyruvate
kinase is activated by fructose 1,6-bisphosphate (FBP), which is an
earlier product within glycolysis. Pyruvate kinase is regulated by
what regulation mechanism? -
correct answer ✅Feedforward stimulation
ATP inhibits an enzyme that catalyzes a reaction within glycolysis
called phosphofructokinase-1 (PFK1). ATP inhibits PFK1 by binding
to it outside of the active site. In this scenario, ATP is an example of
a what? -
correct answer ✅Allosteric inhibitor
What happens to carbon atoms during aerobic cellular respiration?
-
correct answer ✅They are fully oxidized and released as carbon
dioxide
, TTU Bio 1403 Final Exam Questions &
Answers (Grade A+)
What is the function of the electron transport chain? -
correct answer ✅Create a proton [H+] gradient across the inner
mitochondrial membrane
Overall, energy is captured from glycolysis as -
correct answer ✅ATP and NADH
The role of oxygen in cellular respiration is to... -
correct answer ✅Accept low-energy electrons
Three chains of hydrocarbons with a carboxyl group at one end are
attached to a glycerol. What macromolecule is this? -
correct answer ✅Lipid
Ribonucleotides are bound together through phosphodiester
bonds. What macromolecule is this? -
correct answer ✅RNA
Amino acids are bound together through peptide bonds. What
macromolecule is this? -
correct answer ✅Protein
