A triglyceride consists of glycerol and three different fatty acids, linoleic acid (L), oleic acid (O) and palmitic acid $$$(P)$$$. The diagram shows one possible arrangement of the fatty acids $$$L, O$$$ and $$$P$$$ in the molecule. What is the total number of different arrangements of the fatty acids in this triglyceride?

Biology

IGCSE&ALevel

CAIE

Exam No：9700_w18_qp_11 Year：2018 Question No：10

Answer:

Knowledge points:

2.3.1 describe and draw the general structure of an amino acid and the formation and breakage of a peptide bond

2.3.2 explain the meaning of the terms primary structure, secondary structure, tertiary structure and quaternary structure of proteins

2.3.3.1 hydrophobic interactions

2.3.3.2 hydrogen bonding

2.3.3.3 ionic bonding

2.3.3.4 covalent bonding, including disulfide bonds

2.3.4 state that globular proteins are generally soluble and have physiological roles and fibrous proteins are generally insoluble and have structural roles

2.3.5 describe the structure of a molecule of haemoglobin as an example of a globular protein, including the formation of its quaternary structure from two alpha (α) chains (α–globin), two beta (β) chains (β–globin) and a haem group

2.3.6 relate the structure of haemoglobin to its function, including the importance of iron in the haem group

2.3.7 describe the structure of a molecule of collagen as an example of a fibrous protein, and the arrangement of collagen molecules to form collagen fibres

2.3.8 relate the structures of collagen molecules and collagen fibres to their function

Answer:

Knowledge points:

Solution:

Related Question