Exam 4: Archaeal Cell Structure

The primary lipid components of the membranes of extreme thermophiles are

The DNA of some archaeons is stabilized by association with archaeal histone proteins forming particles resembling eukaryotic nucleosomes.

Many archaeal genomes include chromosomes and plasmids.

External structures that are found in Archaea but not Bacteria are _________.

One type of archaeon,Haloquadratum walsbyi,is shaped like a postage stamp with dimensions of 2 µm x 3 µm x 0.25 µm.What advantage would this shape provide?

A feature unique to some archaeal plasma membranes is that they may

Archaeal and Bacterial pili are identical in structure and function.

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

The hydrocarbons found in the membranes of archaea are identical to those found in bacteria.

Select the correct statement about archaeal ribosomes.

You are studying a newly discovered prokaryotic microorganism and are attempting to determine whether it will be classified in the domain Bacteria or in the domain Archaea.All of the following would be helpful in making that distinction except

Which statement correctly describes archaeal cell walls?

Some archaeons are symbionts in animal digestive tracts.

Which statement correctly explains the Gram stain reaction of archaeal cells?

Cell walls of most Archaea and bacteria contain peptidoglycan.

_______ are the site of protein synthesis in the cell.

Some researchers have suggested that archaeal flagella be renamed as archaella because

Which of the following structures are external to both Bacterial and Archaeal cells?

Which of the following is not true about archaeal ribosomes?

A peptidoglycan-like polymer found in the cell walls of some Archaea is called __________.