A eukaryote (/juːˈkæri.oʊt/ or /juːˈkæriət/) is an organism whose cells contain complex structures enclosed within membranes. The defining membrane-bound structure that sets eukaryotic cells apart from prokaryotic cells is the nucleus, or nuclear envelope, within which the genetic material is carried. The presence of a nucleus gives eukaryotes their name, which comes from the Greek ευ (eu, "good") and κάρυον (karyon, "nut" or "kernel"). Most eukaryotic cells also contain other membrane-bound organelles such as mitochondria, the Golgi apparatus. In addition, plants and algae contain chloroplasts. Many unicellular organisms are eukaryotes, such as protozoa. All multicellular organisms are eukaryotes, including animals, plants and fungi. aliens
All items (1007)
- Sagra buqueti
- Sahiwal Cattle
- Saina's species
- Saiyan
- Salamence
- Sand Scorpion (Final Fantasy IX)
- Santabeard Kwyjiborax
- Santabearded Evil Lorax
- Saola
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- SCP-049
- SCP-096
- SCP-682
- SCP-939
- SCP-966
- SCP-999
- Sea Monkey
- Sea Shockshell
- Sectoid
- Seven-colored Tanager
- Sharingan people
- Sheep
- Sheeper
- Sheldon J. Plankton's Species
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- Shieldon
- Shimosaurus
- Shockshell
- Short Spikegrass
- Short-Beaked Echidna
- Siberian Tiger
- Siberian Unicorn
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- Silverfish
- Sitting Minecraft Creeper
- Skaven
- Skeeskee
- Skeever
- Sker Buffalo
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- Skullbeak
- Skunk ape
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- Sledge Bro
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- Slender Man
- Sload
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- Smurf
- Snow Elf
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- Snow Leopard
- Snow Wasset
- Snowstalker
- Soa-Soa Water Lizard
- Sororian Ape
- Souliman Aktapan
- Southern Tamandua
- Spanish Dancer Jellyfish
- Specific Tworandomic Figures
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- Spectacled Bear
- Speedemon
- Spike Spider
- Spinefish
- Spiny
- Spirit Tiger
- Spix's Macaw
- SpongeBob Squarepants's Species
- Spoon-billed Sandpiper
- Spotted Hyena
- Spotted Jelly
- Sprixie
- Stegadon
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- Strawberry African Bush Elephant
- Strawberry elephant
- Striped Biologist-Taunter
- Striped skunk
- Subcon
- Subconian toad
- Suckophant
- Suitor
- Sulawesi Snouter
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- Sunflower (Plants vs. Zombies)
- Super Cat
- Susecdurus
- Swalot
- Swamp Beans
- Swampert
- Sylveon
- Tall Santabeard Evil Lorax
- Tall Spikegrass
- Tapejara
- Tardigrade
- Tauros
- Techo
- Teensie
- Teltarian
- Ten-Legged Lion
- Tepuianiantrich
- Terminan Hylian
- The Cheat
- The Fiend (Monstrum)
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- Thylacine
- Tiger
- Tikbalang
- Tirisfal Bear
- Titanosaurus (Godzilla)
- Tomacco
- Tonberry
- Touch Me
- Toxic Robber Fly
- Trapjaw (Evolve)
- Trilobite conchadurus
- Trippie Red Monster
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- Troll (Frozen)
- Troll (hobbit)
- Trollicanuiupitchus troll
- Troodon (Jurassic Park)
- Truffula Tree
- Tulip's species
- Turbellaria
- Turtonator
- Twohead
- Tyranitar
- Tyrannosaurus
- Wally (Bush Whacker)
- Walrus
- Wamasu
- Warg
- Washington's Eagle
- Wasp Spider
- Water Sprite
- Water Tektite
- Waterfall Centipede
- Wendigo
- Wendigo (Supernatural)
- Werebear (Elder Scrolls)
- Werewolf
- Western gorilla
- Whaill
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- White Eyed people
- White rhinoceros
- White-tailed deer
- Wimpod
- Wind Serpent
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- Winger
- Wiseman in a Carrot Suit
- Wither
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- Wolf
- Wolverine
- Wonder (Final Fantasy Adventure)
- Woodsprite
- Woolie