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Flashcards in Chapter 16 Part 2 Deck (25):
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The multicellular haploid form in the life cycle of organisms undergoing alternation of generations; mitotically produces haploid gametes that unite and grow into the sporophyte generation.

Gametophyte

1

Microbiology technique to identify the cell wall composition of bacteria. Results categorize bacteria as positive or negative for the stain.

Gram Stain

2

Diverse group of bacteria with a cell wall that is structurally less complex and contains more peptidoglycan than that of gram-negative bacteria. These bacteria are usually less toxic than gram-negative bacteria.

Gram-Positive

3

A member of a group of photosynthetic protists that includes chlorophytes and charophyceans, the closest living relatives of land plants. This organism includes unicellular, colonial, and multicellular species.

Green-Alga

4

An organism that cannot make its own organic food molecules and must obtain them by consuming other organisms or their organic products; a consumer or a decomposer in a food chain.

Heterotroph

5

A type of Archaea that produces gas waste as a metabolic waste product.

Methanogens

6

Organism that derives its nutrition from a living host, which is harmed by the interaction.

Parasite

7

An agent such as a virus, bacteria, or fungus, that causes disease.

Pathogen

8

A polymer of complex sugars cross-linked by short polypeptides; a material unique to bacterial cell walls.

Peptidoglycan

9

An organism that obtains energy from sunlight and carbon from CO2 by photosynthesis.

Photoautotroph

10

An organism that obtains energy from sunlight and carbon from organic sources.

Photoheterotroph

11

A short projection on the surface of a prokaryotic cell that helps the prokaryote attach to other surfaces. Specialized sex is performed using these short projections which are used in conjugation to hold the mating cells together.

Pious

12

A type of protist that has amoeboid cells, flagellated cells, and an amoeboid feeding stage in its life cycle.

Plasmodia Slime Mold

13

A single mass of cytoplasm containing many nuclei. (2) The amoeboid feeding stage in the life cycle of a slime mold.

Plasmodium

14

A diverse clade of gram-negative bacteria that includes five subgroups known as alpha, beta, gamma, delta, and epsilon.

Proteobacteria

15

A member of the Kingdom in which it is named (Protist). These organisms are unicellular, though some are colonial or multicellular.

Protist

16

A protist that lives primarily by ingesting food; a heterotrophic, "animal- like" protist.

Protozoan

17

A temporary extension of an amoeboid cell. These organisms function in moving cells and engulfing food.

Pseudopodia

18

A protist that moves and feeds by means of threadlike pseudopodia and has a mineralized support structure composed of silica.

Radiolarian

19

A member of a group of marine, mostly multicellular, autotrophic protists, which includes the reef-building coralline algae.

Red Alga

20

A process by which protist diversity is hypothesized to have evolved from a symbiotic association that arose when an autotrophic eukaryotic protist was engulfed by a heterotrophic eukaryotic protist.

Secondary Endosymbiosis

21

A member of a group of helical bacteria that spiral through the environment by means of rotating, internal filaments.

Spirochete

22

The multicellular diploid form in the life cycle of organisms undergoing alternation of generations; results from a union of gametes and meiotically produces haploid spores that grow into the gametophyte generation.

Sporophyte

23

A close association between organisms of two or more species

Symbiosis

24

A fungus-like protist in the stramenopile clade.

Water-Mold