Exam 2: A Brief Journey to the Microbial World

All known Archaea are extremophiles of one sort or another.

The entire span of heritable nucleotides, both protein- encoding and non- encoding regions, in an organism is collectively called the _________.

At the present time, __________ phyla of the Archaea have been identified.

Sketch a phylogenetic tree showing the domains and major branches.

What type of microscopy has found widespread use in microbial ecology because of its ability to resolve the different layered components of a biofilm?

Light microscopy is an effective way of viewing objects in three dimensions.

Bacteria stain as gram positive or gram negative because of differences in the cell

Compare and contrast the mechanisms of differential interference contrast (DIC) microscopy and confocal scanning laser microscopy (CSLM).

The function of the chloroplast is to __________ .

The commonality linking the Aquifex and Thermotoga species is_________ .

How was it determined that mitochondria and chloroplasts of eukaryotes are actually ancestors of specific lineages of Bacteria?

In which of the following habitats might an extremophile be isolated?

In phase- contrast microscopy, the differences in refractive indices between organisms and their environments are utilized for better viewing of living specimens.

Paired chromosomes are found in

Ribosomal RNA- based studies reveal that

Prokaryotes are made up of which two groups?

Cyanobacteria and their phylogenetic relatives undergo a process known as_________in which molecular oxygen is liberated.

In a lichen, the_________ is the phototrophic component, and the_________ provides the phototroph with an anchor and with protection from the elements.

The three options by which an organism may obtain energy are: _________, __________, and .

Disease- causing prokaryotes are found exclusively among the