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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.

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.

Subjects

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

  • 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.

Tutorials

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

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