Describe protein subunit assembly and distinguish proteins with non-protein components using familiar examples.
Tę umiejętność sprawdza 7 zadań wzorowanych na arkuszach IB z lat 2022–2026.
During exercise, oxygen delivery must meet increased demand in mammalian tissues. (a) Outline the molecular structure of haemoglobin. (b) Explain how the Bohr effect improves delivery of oxygen to tissues with a high respiration rate. (c) Describe features of…
Three protein models are shown. Which set of descriptions is supported by their structures? A. P: conjugated; Q: fibrous; R: globular B. P: primary; Q: globular; R: fibrous C. P: fibrous; Q: globular; R: secondary only D. P: lipid; Q: conjugated; R:…
Which inference about protein organization is supported by the model? A. There is one uninterrupted peptide backbone B. Two polypeptides are connected by disulfide bridges C. Each chain consists of nucleotides D. Only hydrogen bonds connect the two chains
Which structural interpretation of this hypothetical protein is correct? A. An intrachain disulfide contributes to tertiary structure, and association of two chains gives quaternary structure B. Every line between successive amino acids is a hydrogen bond C.…
A single polypeptide with the ribbon arrangement shown forms a functional enzyme without other polypeptide subunits. Which levels of organization are present? A. Primary and quaternary, but no tertiary B. Primary, secondary and tertiary C. Secondary and…
A functional archaeal membrane pump is formed from one folded polypeptide chain. What is the highest level of protein structure present in that single-chain protein? A. Primary only B. Secondary only C. Tertiary D. Quaternary
State the level of protein structure represented by association of the chains.
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