18 Questions
What is the purpose of glycolysis?
To produce ATP from glucose
Which enzyme is involved in the citric acid cycle?
Citrate synthase
What is the purpose of gluconeogenesis?
To produce glucose from non-carbohydrate precursors
What is the main product of the pentose phosphate pathway?
NADPH
Which molecule acts as a mobile electron carrier in the electron transport chain?
Ubiquinone (UQ)
What is the role of ATP synthase in oxidative phosphorylation?
To establish a proton gradient for ATP production
In protein folding, which of the following is involved in forming the tertiary structure?
Disulfide bonds
When reading a titration curve for an amino acid, which region indicates the buffering capacity of the molecule?
Where the curve plateaus
Which of the following interactions is primarily responsible for stabilizing the α-helix secondary structure in proteins?
Hydrogen bonds
In enzyme kinetics, which type of inhibition involves a reversible binding of the inhibitor to the enzyme-substrate complex?
Non-competitive inhibition
Which amino acid interaction is crucial for maintaining the tertiary structure of proteins in harsh environments, such as extreme pH or temperature?
Hydrophobic interactions
What is the key difference between Fischer projections and Haworth structures of carbohydrates?
Orientation of hydroxyl groups
What is the purpose of DNA replication?
To create a copy of DNA for cell division
Which enzyme is primarily responsible for DNA transcription?
RNA polymerase
What is the purpose of 5' capping in RNA processing?
To stabilize the 5' end of the RNA
What is the role of the initiator tRNA in RNA translation?
To bring the first amino acid to the ribosome
What is the role of the peptidyl transferase in RNA translation?
To form the peptide bond between amino acids
What is the role of signal peptides in post-translational modifications?
To direct the protein to the correct organelle
Test your knowledge on oils, phospholipids, sphingolipids, isoprenoids, membrane structure, and nucleic acids including DNA/RNA bases, nucleotide structure, and complementary base pairing. Explore the makeup, roles, and characteristic structures of various lipids and understand the features of membrane structure such as the fluid mosaic model and lipid movement.
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