Eukaryotic Unicellular or Colonial some algae Heterotrophic or

• Eukaryotic • Unicellular or Colonial (some algae) • Heterotrophic or Autotrophic • Require moist conditions to thrive. http: //www. youtube. com/watch? v=SCfg 3 syw. C 7 k http: //www. youtube. com/watch? v=1 c. LWKDh. BYxo&feature=related

• Bottom of Food Chains (largest biomass of many aquatic ecosystems) • Photosynthesis (create as much as 80% of the oxygen) • Control Bacterial populations (yum, yum) esp. aquatic • Act as Decomposers – recycle organic matter • Assist Many Animals With Digestion – break down plants in guts of many vertebrates • Cause Many Diseases (Malaria, Beaver Fever, Dysentery, African Sleeping Sickness, Montezuma’s revenge…)

• Asexual = BINARY FISSION • Sexual = CONJUGATION

• Plant-like protists (algae) • Autotrophic (photosynthetic) http: //www. youtube. com/watch? v=JQYKa 5 Aof. Q 8 • Animal-like protists (protozoans) • Heterotrophic http: //www. youtube. com/watch? v=Lu. XMz 3 j 9 E 8 k&feat ure=related • Fungi-like protists (slime molds) • Heterotrophic http: //www. youtube. com/watch? v=le. KI 3 Cv 9 YYw&featu re=related

• The Amoebas • Heterotrophic • MOVE WITH PSEUDOPODS (false feet) • Cytoplasmic streaming • Phagocytosis (engulf prey) into food vacuoles • Can parasitize humans (ie: amoebic dysentery) • Reproduce asexually = binary fission http: //www. youtube. com/watch? v=7 p. R 7 TNz. J_p. A&feature=related http: //www. youtube. com/watch? v=W 6 rnhi. Mxt. KU&feature=related

• The FLAGELLATED protozoans • Many are parasitic • Trypanosoma (African sleeping sickness) • Spread by Tstse Fly • Form cysts that are transferred to hosts http: //www. youtube. com/watch? v=CAq. LCB 5 K 1 JA&feature=Play. List&p=7 A FEDB 6 DC 4 C 93 F 2 A&playnext=1&playnext_from=PL&index=7 http: //www. youtube. com/watch? v=Ga 47 X 8 I 1 i. Ng&feature=related

TSTSE FLY

http: //www. youtube. com/watch? v=dy. BWj. N 1 e 31 A&feature=related • CAN’T MOVE around • SPORES! • Are all parasites that parasitize animals • Malaria carried by Anopheles Mosquito • Cryptosporidium

complex life cycle

• The CILIATED Protozoans • Complex • Swim with cilia • Usually Asexual = binary fission • Sexual = conjugation

http: //www. youtube. com/watch? v= QGAm 6 h. Mys. TA&feature=related

• Euglena • Have flagella • Autotrophic, but can be heterotrophic in darkness http: //www. youtube. com/watch? v=0 r. NI 8 Bos_BQ&feature=related

VOLVOX: http: //www. youtube. com/watch? v=R 0 Y 7 k 4 g. OYko&feature=related CHLAMYDOMONAS http: //www. youtube. com/watch? v=Nk. Zjz. ILqwz. Q

• The Dinoflagellates • Most of the phytoplankton • Can cause ‘red tide’ • All autotrophic • Can bioluminesce http: //www. youtube. com/watch? v=XSm. Jwlv. Ry. HI&feature=related

• The Diatoms • Have silica (glass) shells • Some are flagellated • Are all autotrophic http: //www. youtube. com/watch? v=JYB 5529 h. DPI&feature=fvsr

http: //www. youtube. com/watch? v=bk. Vh. LJLG 7 ug&feature=related

• The SLIME MOLDS (fungi like SLIME MOLDS protists) • Heterotrophic Decomposers • Spend most of their lives as separate single-celled amoeboid or flagellated protists http: //www. youtube. com/watch? v=YBAEkw. Ne. Rw. A • In unfavorable conditions, the cells come together to make a sporangia which releases spores. When conditions become favorable again, these spores become protists again!

VOLVOX (a colonial protist) This is a colony. The cells can live independently, but associate for reproduction. The volvox is a hollow ball of cells. Significance? Ancestors like them were probably the evolutionary ancestors of multicellular animals.