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IB Biology SL B1.2.1 Generalized Amino Acid Structure Questions

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

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

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.

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

[Maximum number: 1]

The diagram shows the molecular structure of the amino acid leucine.

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

Draw a circle on the diagram to enclose the carboxyl group.

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