Eukarya
includes the kingdoms Plantae, Fungi, and Animalia
Archaea
includes prokaryotes that do not have peptidoglycan in their cell wall
Bacteria
includes prokaryotes with peptidoglycan in their cell walls and also photosynthetic prokaryotes
Extreme Halophiles
includes prokaryotes that require a high concentration of salt for survival
Hyperthermophiles
includes prokaryotes that grow in extremely hot environments
Examples of Archaea
-hyperthermophiles
-extreme halophiles
-methanogens
Examples of Bacteria
-cyanobacteria
-proteobacteria
-gram-positive bacteria
Examples of Eukarya
-fungi
-green algae
-slime molds
-cilliates
Which of the following is NOT a characteristic of members of the Domain Archaea?
They contain nuclei.
A unicellular, photosynthetic nucleated cell would belong to which domain?
Eukarya
The first cells were formed approximately __________ years ago.
3 billion
Why is visualization not sufficient to properly identify bacteria?
Bacteria have a limited set of shapes and many unrelated bacteria share the same shape.
What is the hallmark of dichotomous keys?
They consist of a series of paired statements, in which only one statement of each pair applies to a given organism.
Biochemical tests _________________.
are the main methods used to identify unknown bacteria