USABO Open Exam Questions and Answers | 100% Correct Answers | Graded A+

USABO Open Exam Questions and Answers |
100% Correct Answers | Graded A+
Question: Actin -✓✓Protein involved in cell motility and muscle
contraction.

Question: Myosin -✓✓Motor protein involved in muscle contraction and
cytokinesis.

Question: Dynein -✓✓Motor protein involved in intracellular transport
and ciliary/flagellar movement.

Question: Kinesin -✓✓Motor protein involved in intracellular transport
and mitotic spindle formation.

Question: Cyclin -✓✓Regulatory protein involved in cell cycle control.

Question: Extracellular matrix -✓✓Non-cellular component providing
structural support and biochemical signaling to surrounding cells.

Question: Cytokinesis -✓✓Division of the cytoplasm following nuclear
division.

Question: pKa -✓✓Negative base-10 logarithm of the acid dissociation
constant.

Question: Oxidative phosphorylation -✓✓Process of ATP synthesis in
mitochondria using oxygen as the final electron acceptor.

Question: Frederick Griffith -✓✓Discovered transformation through
pneumococcal bacteria.

, Question: Hershey and Chase -✓✓Confirmed DNA as the hereditary
material using bacteriophages.

Question: Chargaff -✓✓Discovered the complementary base pairing in
DNA.

Question: Watson and Crick -✓✓Proposed the double-helix structure of
DNA.

Question: Meselson and Stahl -✓✓Demonstrated semi-conservative
replication of DNA.

Question: Transmembrane protein -✓✓Protein spanning the cell
membrane and facilitating molecular transport.

Question: Transmembrane domain -✓✓Region of a transmembrane
protein that crosses the lipid bilayer.

Question: Alpha helices -✓✓Secondary structure of proteins
characterized by right-handed coiled segments.

Question: Electron transport chain -✓✓Series of protein complexes and
cytochromes facilitating electron transfer to generate ATP.

Question: Ubiquinone -✓✓Coenzyme involved in electron transport and
ATP synthesis.

Question: FADH2 -✓✓Reduced form of flavin adenine dinucleotide,
donates electrons to the electron transport chain.

Question: NADH -✓✓Reduced form of nicotinamide adenine
dinucleotide, donates electrons to the electron transport chain.