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Flashcards in science: chpt. 19 test Deck (28):
0

Heterotrophic, unicellular, animal-like protist

Protozoan

1

Microscopic protozoan parasite that infects insects and other organisms, causing disease

Microsporidium

2

A membrane layer that encloses a paramecium and some other protist

Pellicle

3

Elongated, cylindrical structure that can discharge a spinelike structure that may function in defense, as an anchoring device, or to capture prey

Trichocysts

4

Organelle that collects excess water in the cytoplasm and expels it from the cell; maintains homeostasis in hypotonic environments

Contractile vacuole

5

Temporary cytoplasmic extensions that sarcodines use for feeding and movement

Pseudopod

6

Hard, porous, shell-like covering of an amoeba

Test

7

Able to emit light

Bioluminescent

8

Group of cells or organisms that join together, forming a close association

Colony

9

Reproductive life cycle that alternates between a diploid sporophyte generation and a haploid gametophyte

Alternation of generations

10

Feeding stage of a slime mold in which it is a mobile cytoplasmic mass with many diploid nuclei but no separate cells

Plasmodium

11

Chemical given off by starving amoeba-like cells that serves as a signal to the cells to form a slug like colony

Acrasin

12

Plantlike, photosynthetic, unicellular organisms that can become parasitic when there is no light

Algae

13

Unicellular, animal-like protist; they are heterotrophs that ingest bacteria, algae, or other protozoans

Amoeba

14

In favorable conditions dinoflagellates reproduce in large numbers called _________. They deplete the oxygen in the water and suffocate fish.madditional fish suffocate when their gills are clogged with dinoflagellates. __________ have a red tint so when they die it lets off red tides that are a danger to humans.

Blooms

15

It is a primary photosynthetic pigment; has the pigment that gives green color in plants

Chlorophyll

16

They have yellow and brown carotenoids; unicellular, photosynthetic; have two flagella; reproduce sexually and asexually

Chrysophytes

17

The outer cell membrane and an inner thickened cytoplasm of an amoeba

Ectoplasm

18

Unicellular organism with membrane bound nucleus and organelles; formed when a large prokaryote engulfed a smaller prokaryote and eventually evolved into one organism

Eukaryote

19

Can be a serious threat to humans because they produce a potentially lethal nerve toxin. The toxins affect people when they eat shellfish

Red tides

20

Lives symbiotically with green algae; unicellular protozoan; reproduces by binary fission

Paramecia

21

Characteristic of plants yet they lack a cell wall

Chloroplast

22

List Habitats of Protists

Damp, aquatic environments such as decaying leaves, damp soil, ponds, streams, and oceans

23

List the Classes of Algae

Diatoms, Dinoflagellates, euglenoids, chrysophytes, brow algae, green algae, red algae

24

List some Uses for Algae

Red Algae is used for soup and sushi, brown algae is used to stabilize ice cream and syrup, green algae is in sea lettuce and meat, and diatoms are used as a filtering material in beverages and cooking oils

25

List the Groups of Protists

Animal like, plant like, fungus like

26

List the Phyla of Protozoans

Ciliates, Amoebas, Sarcodines, Apicomplexa, and Zoomastiginia,

27

List Protists and Disease in Humans

African Sleeping Disease, American Sleeping Disease, and Malaria

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