single-celled
Amoeba's cellular structure
Single-celled describes organisms consisting of only one cell, which performs all life functions: single-celled organisms like bacteria and amoebas.
The term appears almost exclusively in biological contexts.
Also written as single-cell when used attributively: single-cell analysis.
Shape-shifting single-celled organism
- parameciumCiliated slipper-shaped protozoan
- euglenaPlant-animal hybrid microbe
- bacteriumSingle-celled prokaryotic life
- protozoanUnicellular eukaryotic life form
diatom · archaea · cyanobacteria · flagellate · ciliate · giardia · plankton · algae
Cell without nuclear membrane
- eukaryoteOrganism with nucleated cells
- microorganismMicroscopic living entity
- pathogenDisease-causing microorganism
- germDisease-causing microorganism
anaerobe · aerobe · autotroph · heterotroph · extremophile · thermophile
Gel surrounding the nucleus
- nucleusCentral controlling part
- plasma membraneLipid bilayer enclosing cytoplasm
- flagellumWhiplike cellular appendage
- ciliaHairlike cellular projections
pseudopod · contractile vacuole · cytoskeleton · ribosome · mitochondria · endoplasm · ectoplasm · vacuole
Existing from the start
- ancestralOf one's forebears
- ancientVery old indeed
- prehistoricBefore documented civilization
- earlyOccurring before expected
primitive · fundamental · elemental · precursor · progenitor · origin
Nuclear division producing identical cells
- binary fissionAsexual splitting into two
- phagocytosisCellular ingestion of particles
- osmosisSolvent crossing semipermeable barrier
- diffusionPassive molecular spreading
cytokinesis · reproduction · metabolism · conjugation · endocytosis · chemotaxis · sporulation · budding
amoeba
Shape-shifting single-celled organism
- parameciumCiliated slipper-shaped protozoan
- euglenaPlant-animal hybrid microbe
- bacteriumSingle-celled prokaryotic life
protozoan · diatom · archaea · cyanobacteria · flagellate · ciliate · giardia · plankton · algae · microbe
prokaryote
Cell without nuclear membrane
- eukaryoteOrganism with nucleated cells
- microorganismMicroscopic living entity
- pathogenDisease-causing microorganism
germ · anaerobe · aerobe · autotroph · heterotroph · extremophile · thermophile
cytoplasm
Gel surrounding the nucleus
- nucleusCentral controlling part
- plasma membraneLipid bilayer enclosing cytoplasm
- flagellumWhiplike cellular appendage
cilia · pseudopod · contractile vacuole · cytoskeleton · ribosome · mitochondria · endoplasm · ectoplasm · vacuole · nucleoid
primordial
Existing from the start
- ancestralOf one's forebears
- ancientVery old indeed
- prehistoricBefore documented civilization
early · primitive · fundamental · elemental · precursor · progenitor · origin
mitosis
Nuclear division producing identical cells
- binary fissionAsexual splitting into two
- phagocytosisCellular ingestion of particles
- osmosisSolvent crossing semipermeable barrier
diffusion · cytokinesis · reproduction · metabolism · conjugation · endocytosis · chemotaxis · sporulation · budding
single-celledmulticellular
Having multiple cells
animal · plant · vertebrate · mammal · differentiated
single-celledcomplex
Having many interconnected parts
differentiated · specialized · organized · higher · advanced
cell, single, cells, cellular, celled, unicellular, multicellular, intracellular, extracellular