Microbiology Module 7 MC/FITB

Microbial Chemistry

Which of these elements is not a micronutrient?

Ca

Which of the following is the name for molecules whose structures are nonsuperimposable mirror images?

enantiomers

By definition, carbohydrates contain which elements?

carbon, hydrogen, and oxygen

Monosaccharides may link together to form polysaccharides by forming which type of bond?

glycosidic

Which of the following describes lipids?

all of the above

Molecules bearing both polar and nonpolar groups are said to be which of the following?

amphipathic

Which of the following groups varies among different amino acids?

R group

The amino acids present in proteins differ in which of the following?

all of the above

Which of the following bonds are not involved in tertiary structure?

peptide bonds

Which of the following characteristics/compounds is not considered to be a phenotypic biochemical characteristic used of microbial identification?

small-subunit (16S) rRNA gene

Proteomic analysis is a methodology that deals with which of the following?

the study of all accumulated proteins of an organism

Which method involves the generation of gas phase ions from intact microorganisms?

MALDI-TOF

Which method involves the analysis of membrane-bound carbohydrates?

Lancefield group testing

Which method involves conversion of a microbe’s lipids to volatile compounds for analysis by gas chromatography?

FAME

Waxes contain esters formed from long-chain __________ and saturated __________, and they may also contain substituted hydrocarbons.

alcohols; fatty acids

Cholesterol is the most common member of the __________ group, found in animal tissues; it has a tetracyclic carbon ring system with a __________ bond in one of the rings and one free __________ group.

steroid; double; hydroxyl

The sequence of amino acids in a protein is called its __________.

primary structure

Denaturation implies the loss of the __________ and __________ structures without the loss of the __________ structure.

secondary; tertiary; primary

A FAME analysis involves the conversion of _______ to more volatile _____ for analysis using ____________.

fatty acids; esters; gas chromatography