Small, numerous, ancient & weird. Protista

The “junk drawer” of kingdoms _______________of characteristics Some are so ________ they can’t be seen without a microscope Some grow many meters long Some are poisonous Some provide food Some are _____________ High variety tiny producers consumers

The earliest ___________ (larger cells, organelles present, ‘new seed’) [Proto means ‘first’] A kingdom comprised of many strange phyla… Not much in common! - MOST are unicellular - ___________ - All have a nucleus, i.e. Eukaryotes -May be colonial (many single cells living together.) - Some are plant-like, others are animal-like. Protista eukaryotes single celled

What are you guys talking about????!!!! I’m talking about these awesome creatures

MOST are single-celled Scientists believed that the other Eukaryotic kingdoms (animalia, plants, and fungi) all _____________________ Protists are classified based on ____________________ originated from protists how they obtain energy

Euglena Paramecium Amoeba

First the Amoebas – the blobs These guys live in __________ and _____________ pondspuddles

How do the amoebas move? ___________or “false feet” Stretch cytoplasm Pseudopods

Nutrition: ____________ with psuedopods - _______________ This means they are ________________ and ___________-like because they wrap around their food. Food vacuole moves to surface membrane to _______ Food digested by _______________ Engulfs heterotroph phagocytosis animal egest lysosomes

Respiration How do they exchange gases? _____________is their respiratory surface _____________ gases by ___________ 3 Things necessary for a respiratory surface: ____________ Cell membrane Exchangediffusion Thin Moist In touch with the environment

Transport How do they move materials? ____________, ______________ or _________________ Contractile vacuoles pump out excess H2O (__________________) Without it they would __________! DIFFUSIONOSMOSISACTIVE TRANSPORT osmoregulation explode

Reproduction? Asexual! Copy your nucleus & split in two. This is ___________ ____________ _____________beautiful amoeba offspring are produced Binary Fission 2 identical

NOW…lets talk Paramecium! list=PLfDID3Yf46Lfs35H7Xt24cC1aXCCzslbG list=PLfDID3Yf46Lfs35H7Xt24cC1aXCCzslbG They move using _________- oar like ______________ Cant change shape like an amoeba because they have a __________________- thick _______________ Live in stagnant and quiet ponds. CILIA tiny hairs pellicleouter membrane

Nutrition- Paramecium Heterotrophs- eat ____________ & _____________ The _______ sweeps food into the paramecium through the oral groove Oral groove contains a __________ & _____________ Food vacuole forms and ___________digest food Food vacuole to _________________for egestion algaemicroorganisms cilia mouth poregullet lysosomes anal pore

Cool Paramecium Stuff! Trichocysts – thread like organelles which help it ______________ and _________________ Avoids unpleasant ______________ Has a ______________ that controls cells activities and a _____________ that controls reproduction (a separate brain to think about….) entangle predatorslook bigger behavior macronucleus micronucleus

Last…The Euglena Known for their _____________– “whip-like” flagellum

Nutrition Mainly _____________ (___________- has chloroplasts) Can feed as ____________ autotrophic photosynthesis heterotroph

Numbers: 27 phyla; Number of species unknown, but _____________ numerous

Protists in the Ecosystem Many important ecological roles: Photosynthesis releases oxygen. Food source for many aquatic & marine animals. Decomposers & Detritivores - cycling nutrients

Pathogenic protists Some protists cause diseases in certain plants or animals. Many infect humans from some other animal host: Ex. Plasmodium causes malaria – a major disease in tropical areas. Passed from mosquitos to Humans.