Ch. 27 pt. 2: Protists

various phyla share a recent ancestor

various phyla do not share a recent ancestor

glow or release a flash of light, particularly when disturbed production of light depends on the enzyme luciferase and its substrate luciferin

an organism that obtains energy from light

regions of unspecialized dividing cells

specialized cytoplasmic organelle that pumps fluid in a cyclical manner from within the cell to the outside by alternately filling and then contracting to release its contents at various points on the surface of the cell

organisms whose cells engulf particles

moves like a whip

membrane that covers flagella has hair-like projections looks hairy under a microscope

pigments which absorb green wavelengths and reflect red allows for light energy capture at deeper water depths

the coloring of coastal ocean waters red, orange, or brown due to large populations of dinoflagellates

carb. storage form used by diatoms

oomycota (phylum Stranemophila)

use carbs. in dead organic matter as their carbon sources

diatoms and dinoflagellates are in this group phytoplankton organisms that capture the energy of sunlight in nearly all aquatic habitats extremely small

digests prey or other organic material engulfed by the cell

lobes of cytoplasm that the cell extends which moves the organism by amoeboid motion

large composite mass nuclei are suspended in a common cytoplasm that is surrounded by a single plasma membrane flows and feeds as a single huge amoeba - single cell that contains many diploid nuclei surrounded by a single plasma membrane movements occur by cytoplasmic streaming, driven by actin

evident in green algae within the parent cell BOOK

microtubule structure observed during cytokinesis in members of the green algae organizes cell division following mitosis

plant cell structure that forms during late cytokinesis serves as a scaffold for cell plate assembly and subsequent formation of a new cell wall

new cell wall that forms during cytokinesis between the daughter nuclei and grows laterally until it divides the cytoplasm

protein bodies within the single large chloroplast of algae and hornworts act as centers of CO2 fixation by maintaining a CO2-rich environment

primary -non-photosynthetic eukaryotic cell engulfed a photosynthetic cyanobacterium (photosynthetic prokaryote) secondary -non-photosynthetic eukaryote engulfed a photosynthetic eukaryote