Exam 4: Archaeal Cell Structure

Methanogens can live only in __________ environments.

Glycogen is used as a major carbon and energy reserve by some archaeons.

Bacterial and archaeal ribosomes are known as _____ ribosomes,based on their sedimentation coefficient.

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

The Crenarchaeota and Euryarchaeota are

Most archaeal mRNAs like those of eukaryotes are spliced.

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

_______ is a peptidoglycan-like molecule found in the cell walls of some archaea.

Archaeal promoters are most similar to those of

A(n)__________ layer is a layer of protein or glycoprotein that exhibits a pattern resembling floor tiles.

Which of the following is not true about archaeal ribosomes?

The Archaea do not use __________ as a mechanism for reproduction.

Many archaeal genomes include chromosomes and plasmids.

The RNA polymerase enzymes of the Archaea are more similar to eukaryotic enzymes than to bacterial enzymes.

Some archaeons are symbionts in animal digestive tracts.

A large number of the genes shared only by bacteria and Archaea produce proteins that are involved in ____________ ___________.

The Archaea generally lack which of the following that are normally found in gram-negative bacteria?

The primary lipid components of the membranes of extreme thermophiles are

Archaeal and Bacterial pili are identical in structure and function.

Cell walls of most Archaea and bacteria contain peptidoglycan.