IB Biology HL B1.2.1 Generalized Amino Acid Structure Questions

Practise IB Biology HL B1.2.1 by identifying the common amino acid structure and the elements found in proteins.

Exam points

Identify the alpha carbon and its four attachments: amine group, carboxyl group, hydrogen and variable R-group.
Recognize that the R-group varies between amino acids and determines their chemical properties.
Relate proteins to their characteristic elemental composition of carbon, hydrogen, oxygen, nitrogen and usually sulfur.

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Study B1.2.1—Generalized amino acid structure conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

[Maximum number: 3]

The molecules of all amino acids include an amine group, a carboxyl group and an R-group. Draw a diagram to show the structure of an amino acid molecule.

Figure for Answer to Question IB Biology HL B1.2.1 Generalized Amino Acid Structure Questions question 1 — IB Biology HL

and bonded to C ;

c.

Allow a specific amino acid R -
group in marking point c, such
as $\mathrm{CH}_{3}$ (in alanine).

3
max

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IB Biology HL B1.2.1 Generalized Amino Acid Structure Questions question 1