Count carbon double bonds and explain how saturation affects melting points and the properties of fats and oils.
Tę umiejętność sprawdzają 3 zadania wzorowane na arkuszach IB z lat 2024–2026.
Biologia IBPaper 1A, maj 2026, TZ1wzorowane1 pktzamkniętełatwe (szac.)
Two purified triglyceride mixtures have fatty acid chains of similar length. Mixture X contains many cis double bonds and melts below mixture Y. Which explanation is consistent with this result? A. The double bonds make X a polymer of glycerol B. Kinks in the…
Biologia IBPaper 1A, maj 2026, TZ3wzorowane1 pktzamkniętełatwe (szac.)
Two fatty acids are represented by condensed structural formulae; the double bond in Q is cis. P: CH3(CH2)14COOH Q: CH3(CH2)5CH=CH(CH2)7COOH Which comparison is most likely? A. Q packs more tightly because its cis bond…
Biologia IBPaper 2, listopad 2024wzorowane2 pktotwarteśrednie (szac.)
The condensed formula represents a triglyceride containing three different fatty-acid residues. Suggest health risks associated with a diet high in the type of fat represented.