Archaea in the Class _______ Are Thermoacidophiles That Lack Cell

question 13

Multiple Choice

Archaea in the class _______ are thermoacidophiles that lack cell walls,but strengthen their plasma membranes with large quantities of caldarchaeol,glycoproteins,and lipid-containing polysaccharides.

• A)Thermoplasmata
• B)Thermococci
• C)Pyrococci
• D)Archaeoglobus

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Definitions:

Trans-1,3-dimethylcyclopentane

A cyclopentane molecule with methyl groups at the 1 and 3 positions, oriented across from each other.

Diastereomers

Stereoisomers that are not mirror images of each other and have different physical properties.

Asymmetric Carbon

A carbon atom bonded to four different groups, creating a center of chirality that can lead to the existence of enantiomers in a molecule.

Asymmetric Carbons

Carbon atoms bonded to four different groups or atoms, creating a chiral center in a molecule.