Exam 3: Bacteria and Archaea

Which of the following is/are true of capsules?

Proteinacious projections from the surface of a bacterium that are used to mediate conjugation are called sex __________, whereas projections that mediate attachment to surfaces such as host cells are called __________.

The power used by most flagellar motors is produced by

The lipopolysaccharide (LPS) that is found in the outer membrane of gram-negative bacteria is also known as

Intracellular granules of organic or inorganic material that are stockpiled by bacteria for future use are called __________.

Which of the following protects bacteria from lysis in dilute solutions and helps to determine their cellular morphology or shape?

Which of the following is not true of bacterial plasmids?

The term used to describe bacteria that are intermediate in shape between spherical and rod-shaped is

The term used to describe bacteria that are shaped like curved rods is

__________ is the process through which endospores are formed within a vegetative cell.

Lipids with polar and nonpolar ends are said to be

Bacteria that do not have a fixed shape are said to be __________.

Small circular DNA molecules capable of replicating and containing genes that are useful but not necessary to the bacterium are called __________.

Actinomycetes form long filaments called ___________.

The genus of bacteria that undergoes cell division in random planes, forming grapelike clusters of round bacteria, are the __________.

A __________ is a polysaccharide layer that lies outside the cell wall and is not easily removed.

Some photosynthetic bacteria produce gas vacuoles that regulate their buoyancy but contain no lipid.

A branched network of hyphae formed by the Actinomycetes is called a __________.

Archaeal flagella are superficially similar to bacterial flagella, although archaeal flagella are much thicker than bacterial flagella.

The bacterium E. coli swims in a straight line, called a __________, for a few seconds; then it stops, __________, then swims away in a new direction.