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Carbohydrate structure

  • ATI TEAS
  • Science: Biology
  • Multiple choice
  • Difficulty 3 of 5

Question

A student labels a molecular model made of many simple sugar units linked together. Which label best fits this model?

  1. Starch✓ Correct

    Starch is a complex carbohydrate built from linked simple sugars.

  2. A single simple sugar✗ Incorrect

    The model contains many linked sugar units rather than one.

  3. Amino acid✗ Incorrect

    An amino acid is a building block of protein, not the linked-sugar structure described.

  4. Protein chain✗ Incorrect

    Protein chains consist of amino acids rather than simple sugar units.

Answer

A. Starch

Rationale

Starch is a complex carbohydrate. Its structure contains many connected simple sugars, which can be broken down for energy use.

RememberStarch is a complex carbohydrate made of linked sugars.

Sources

  • Carbohydrates (MedlinePlus health topic) MedlinePlus, National Library of Medicine · License: US government work (public domain) · Retrieved · Summary: Carbohydrates
  • ​Amino Acids National Human Genome Research Institute (NIH) · License: US government work (public domain) · Retrieved · Definition
  • Accessory Organs SEER Training Modules, National Cancer Institute · License: US government work (public domain) · Retrieved · Salivary Glands

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