If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Antibodies and acquired immunity

Problem

Joseph, an intern at a lab, studies the chemical composition and structure of an antibody. He tabulates his observations, as seen below.
DetailObservations
Type of moleculeNucleic acid
StructureFour heavy chains
Nature of intramolecular bondDisulphide bond
Joseph's supervisor goes through his notes and points out several incorrect entries.
Which detail did Joseph correctly report?
Choose 1 answer:
Choose 1 answer: