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Welcome to Biology Problems

Biology Problems is a resource hub for professors and educators to access free and open problem sets for Biochemistry, Genetics, and more.

Browse All Questions in the sitemap, organized by subject and topic with question-type labels for each problem set.

Question Finder lets you search and filter problem sets by subject, topic, and question type.

Daily Puzzles

Daily puzzles designed to strengthen biology knowledge.

  • Peptidyle A daily pentapeptide puzzle. Your job is to solve the sequence from molecular structure to form a five-letter word.

  • Deletion mutants A daily Drosophila deletion mutant puzzle where you deduce the correct order of genes on a chromosome to form a five-letter word.

  • Mutant screen A daily Neurospora auxotroph puzzle based on the classic Beadle and Tatum experiments. Deduce the metabolic pathway order from growth data to form a five-letter word.

  • Biomacromolecules A daily molecule identification puzzle. Given a 2D chemical structure, classify it into the correct macromolecule category.

Subjects

Complete, chapter-by-chapter collections of homework and exam questions.

  • Self-test Progress Track which embedded self-test questions you have completed in this browser.

  • Biochemistry Problem sets covering first-semester biochemistry topics, including macromolecules, pKa, and enzyme kinetics.

  • Genetics Problem sets for a post-general biology inheritance genetics course, including Punnett squares, gene mapping, and deletion mutants.

Additional Topics

Collections of selected homework and exam questions.

  • Molecular Biology Problem sets covering PCR, cloning, gene expression analysis, and core molecular biology techniques.

  • Biostatistics Problem sets including measures of central tendency and statistical tests.

  • Laboratory Problem sets covering lab measurement basics, solutions, and dilutions.

Tutorials

Guides for formatting and importing question banks into popular LMS platforms.

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