Biology

Articles about living organisms, life processes and biological research.

Articles in this category: 1554 Updated: April 29, 2026 Page 20 / 33

Mosaic evolution

Mother

Mother: biological parent, caregiver, and social role

Motile

Motor system

Motor system (neurobiology)

Mouth

Mouth

Mouthparts

Mouthparts: structures, types, and roles in animal feeding

Mucus

Mucus: composition, functions, and roles across animals and human health

Multicellular organism

Multicellular organism: structure, reproduction, and diversity

Multiple birth

Murinae

Murinae (Old World rats and mice)

Muscle

Muscle: structure, function, types, and biological importance

Mutant

Mutant: biological meaning, types, history, and cultural use

Mutation

Mutation

Mutation: Causes, Types, Effects, and Role in Biology

An overview of genetic mutation: what it is, how mutations arise, major types, biological consequences, their role in evolution and medicine, and basic detection and repair concept

Mutualism

Mutualism: biological interactions in which both partners benefit

Mycelium

Mycelium: structure, ecology, and practical uses

Myco-heterotrophy

Myco-heterotrophy: Plants That Obtain Carbon from Fungi

Mycobacterium

Mycobacterium leprae

Mycobacterium leprae — the bacterium that causes leprosy

Mycology

Mycoplasma

Mycoplasma genitalium

Myelin

Myocyte

Myoglobin

Myosin

Myosin: the actin-based motor proteins of eukaryotic cells

Myxobacteria

Myxobolus cerebralis

Myxobolus cerebralis — parasite causing whirling disease in salmonids

Nail (anatomy)

Nasal bone

Natural killer cell

Natural killer cell (NK cell)

Natural killer T cell

Natural killer T cell (NKT cell)

Natural selection

Natural selection: the mechanism of adaptive evolution

Nautiloid

Nautiloid (Nautiloidea): chambered cephalopods and their fossil legacy

Neanderthal genome project

Neck (body part)

Neck (anatomy): structure, function, and clinical significance

Need

Need: essentials for living—biological and psychological requirements

Nematomorpha

Nematomorpha (horsehair worms)

Neoptera

Neoptera: the wing-folding insects

Neornithes

Neornithes: modern birds, diversity, and evolutionary significance

Neoteny

Neoteny: retention of juvenile traits through altered developmental timing

Neotominae

Nephron

Nephron

Nephrozoa

Nephrozoa (Eubilateria): the major bilaterian clade of protostomes and deuterostomes

Nerve

Nerve (anatomy, function, and clinical significance)

Nerve cord

Nerve impulse

Nerve impulse

Nerve impulse (action potential)

A nerve impulse is a rapid electrical signal that travels along neurons, allowing the nervous system to transmit information. Covers mechanism, conduction, history, examples, and c

Nervous system

Nervous system: structure, function, development, and clinical importance

Nervous tissue

Nervous tissue