Free Printable High School Biology Activities

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Eukaryotic Cells Article Questions

Printable biology worksheet for Grades 9–12 with reading comprehension and short-answer questions on eukaryotic cell structure and organelle function.

Urocordados (Tunicados) Crossword Puzzle

Spanish-language urocordados (tunicados) biology crossword for Grades 7–9. Study anatomy, filtration, larvae development, and notocorda in marine organisms.

Cell Structure Review Crossword Puzzle

Cell biology crossword for Grades 9–10. Review organelles, cell membranes, and cytoskeletal structures like mitochondria, ribosomes, and the Golgi apparatus.

Genética Crossword Puzzle

Spanish-language genetics crossword puzzle for Grades 7–9 students. Practice vocabulary like ADN, ARN, genes, and heredity with detailed scientific clues.

Cell Biology Crossword Puzzle – Portuguese

Portuguese cell biology crossword puzzle for Grades 7–9. Clues cover organelles, photosynthesis, mitochondria, and cell division processes.

Evolutionary Evidence Crossword (Spanish)

Spanish-language evolutionary evidence crossword for high school biology. Covers fossils, natural selection, Charles Darwin, comparative anatomy, and biochemical evidence.

Electron Transport Chain Crossword Puzzle

Electron transport chain crossword puzzle for high school biology. Questions cover ATP production, oxidative phosphorylation, NADH, and mitochondrial processes.

Cell Division: Mitosis and Meiosis

Printable 9th grade biology worksheet on cell division covering mitosis, meiosis, chromosomes, and related terminology with fill-in-the-blank questions.

Characteristics of Living Organisms

Printable 9th grade biology matching worksheet on seven characteristics of living organisms: movement, respiration, sensitivity, growth, reproduction, excretion, and nutrition.

Circulatory System and Cardiovascular Health Review

Printable 10th grade biology worksheet reviewing the circulatory system, blood vessels, liver function, and cardiovascular disease.

Biology Review Crossword (Spanish)

Spanish-language biology crossword with 15 clues covering cells, genetics, evolution, and ecosystems for middle and high school science students.

Prokaryotic Cells Crossword Puzzle

Prokaryotic cells crossword puzzle in Spanish for Grades 7–9. Practice vocabulary including bacteria, archaea, flagella, binary fission, and nucleoid.

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Human Reproduction and Genetics Test

Printable 9th grade biology test on the reproductive system, covering puberty, fertilization, chromosomes, and genetic disorders like Down syndrome.

Brain and Nervous System Review

Printable 10th grade biology worksheet with two open-response questions on brain function, the corpus callosum, and split-brain experiments.

Charles Darwin Word Search

Charles Darwin word search for middle and high school. Find 16 hidden words including evolution, natural selection, Galapagos, and Beagle in this biology-themed puzzle.

Genetic Engineering Game

Printable 9th grade biology worksheet accompanying an interactive genetic engineering game. Students answer questions about DNA, plasmids, restriction enzymes, and recombinant DNA.