Biology 100 Chapter 21

Front 1

algae

Back 1

protists that perform photosynthesis

Front 2

antibiotics

Back 2

chemical compounds produced by one microorganism that are toxic to another microorganism

Front 3

binary fission

Back 3

the form of reproduction carried out by prokaryotic cells in which the chromosome replicates and the cell pinches between the attachment points of the two resulting chromosomes to form two new cells

Front 4

capsid

Back 4

a protein coat that surrounds the genetic material in almost all viruses

Front 5

colonial multicellularity

Back 5

a form of life in which individual cells form stable associations with one another but do not take on specialized roles

Front 6

eukaryote

Back 6

an organism that is a member of domain eukarya

Front 7

extremophile

Back 7

an organism that grows optimally in one or more conditions that would kill most other organisms

Front 8

mutualism

Back 8

a form of relationship between tow organisms in which both organisms benefit

Front 9

phathogenic

Back 9

Disease-causing Viruses, bacteria, protists, and fungi are spoken of as being pathogenic or nonpathogenic

Front 10

phytoplankton

Back 10

Small photosynthesizing organisms that drift in the upper layers of oceans or bodies of freshwater, often forming the base of aquatic food webs

Front 11

prokaryote

Back 11

a single-celled organism whose complement of DNA is not contained within a nucleus

Front 12

protist

Back 12

a eukaryotic organism that does not have all the defining characteristics of a plant, animal, or fungus. that catchall term protist is used to refer to several distinct evolutionary lines of eukaryotic organisms, most of them single celled and aquatic

Front 13

true multicelularity

Back 13

a form of life in which individual cells exist in stable groups, with different cells in a group specializing in different functions

Front 14

virus

Back 14

a noncellular replicating entity that must invade a living cell to replicate itself