Biology
Articles about living organisms, life processes and biological research.
Cell nucleus
Cell nucleus: structure, function, and biological significance
Cell theory
The Cell Concept: Principles, History, and Modern Refinements
Cell wall
Cellular respiration
Cellular respiration: how cells convert nutrients into ATP
Central dogma of molecular biology
Central nervous system
Centriole
Centrosome
Centrosome (animal cell microtubule-organizing center)
Cephalothorax
Cerebellum
Cerebellum: structure, function, development, and clinical significance
Cerebral cortex
Cerebral cortex: structure, function, development, and clinical significance
Cerebrospinal fluid
Cerebrum
Cerebrum: structure, function, and clinical significance
Cervix
Cervix: structure, function, and clinical importance
Cetology
Cetology: the study of whales, dolphins and porpoises
Cheek
Chemoautotroph
Chemoautotrophs: organisms that build biomass from inorganic chemicals
Chimaera (genetics)
Chimaera (genetics): organisms composed of genetically distinct cell lines
Chlamydia (bacterium)
Chlamydia (genus of bacteria)
Chlamydia trachomatis
Chlamydia trachomatis: biology, clinical disease, diagnosis and prevention
Chlamydiae
Chlamydiae: obligate intracellular bacteria – biology, life cycle, and significance
Choanoflagellate
Choanoflagellates: collar-bearing unicellular and colonial eukaryotes
Chromalveolate
Chromalveolate (Chromalveolata): concept, members, and classification issues
Chromatid
Chromatin
Chromatophore
Chromosome
Chromosome: structure, function, and biological significance
Chromosomes are DNA–protein complexes in the nuclei of eukaryotic cells that package genes, enable inheritance, and play central roles in cell division, development and genetic var
Chromosome inversion
Chytridiomycota
Chytridiomycota: the chytrid fungi — features, ecology, and significance
Cilia
Cilia: structure, function, and biological importance
Cilia are hairlike projections on eukaryotic cells that enable movement, fluid flow, and sensing. This article explains their structure, types, roles, history, and clinical relevan
Ciliate
Circadian rhythm
Circadian Rhythm: The Biological Clock Regulating Daily Physiology
Circulatory system
Circulatory system (cardiovascular system)
Cladistics
Cladistics: principles, methods, and applications
Class (biology)
Clavicle
Cleidoic egg
Climax community
Cline
Cline (biology) — Gradients of variation across populations
Clitoris
Cloaca
Cloaca: single posterior chamber for excretion and reproduction in vertebrates
Clone
Clone: biological and genetic copies
Clostridia
Clostridia: anaerobic, spore-forming bacteria of medical and ecological importance
Clostridium
Clostridium: overview of the genus, traits, diseases and uses
Clostridium perfringens
Cnida
Cnida — the stinging organelles of Cnidaria
Coagulation
Coccidia
Coccidia: microscopic apicomplexan parasites