Biology study guides

A deep-dive guide to biochemistry and energy on the Louisiana LEAP 2025 Biology test: the chemistry of carbon and water, the four macromolecules, enzymes and activation energy, photosynthesis, and cellular respiration, with the item types the test uses.

A deep-dive guide to cells and transport on the Louisiana LEAP 2025 Biology test: cell theory, prokaryotic and eukaryotic cells, organelles and structure-function, the cell membrane and passive and active transport, the cell cycle and mitosis, and meiosis as a source of variation, with the item types the test uses.

A deep-dive guide to the human body and homeostasis on the Louisiana LEAP 2025 Biology test: homeostasis and feedback, levels of organization and body systems, transport and gas exchange, the nervous and endocrine systems, and the immune system, with the item types the test uses.

A deep-dive guide to the LS2 ecosystems core idea on the Louisiana LEAP 2025 Biology test: energy flow and food webs, the cycling of matter, population dynamics and carrying capacity, ecosystem stability and resilience, and human impact, with the item types the test uses.

A deep-dive guide to the LS3 heredity core idea on the Louisiana LEAP 2025 Biology test: DNA structure and replication, protein synthesis, Mendelian genetics and Punnett squares, non-Mendelian inheritance, mutations, and biotechnology, with the item types the test uses.

A deep-dive guide to the LS4 evolution core idea on the Louisiana LEAP 2025 Biology test: the evidence for common ancestry, natural selection and adaptation, speciation and extinction, classification and cladograms, and biodiversity, with the item types the test uses.