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Microbiology

Multiple Choice

MicrobiologyMultiple Choice

Multiple Choice

1.

Which of these elements is not a micronutrient?

  1. C
  2. Ca
  3. Co
  4. Cu
2.

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

  1. structural isomers
  2. monomers
  3. polymers
  4. enantiomers
3.

By definition, carbohydrates contain which elements?

  1. carbon and hydrogen
  2. carbon, hydrogen, and nitrogen
  3. carbon, hydrogen, and oxygen
  4. carbon and oxygen
4.

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

  1. hydrogen
  2. peptide
  3. ionic
  4. glycosidic
5.

Which of the following describes lipids?

  1. a source of nutrients for organisms
  2. energy-storage molecules
  3. molecules having structural role in membranes
  4. molecules that are part of hormones and pigments
  5. all of the above
6.

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

  1. hydrophilic
  2. amphipathic
  3. hydrophobic
  4. polyfunctional
7.

Which of the following groups varies among different amino acids?

  1. hydrogen atom
  2. carboxyl group
  3. R group
  4. amino group
8.

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

  1. size
  2. shape
  3. side groups
  4. all of the above
9.

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

  1. peptide bonds
  2. ionic bonds
  3. hydrophobic interactions
  4. hydrogen bonds
10.

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

  1. poly-β-hydroxybutyrate
  2. small-subunit (16S) rRNA gene
  3. carbon utilization
  4. lipid composition
11.

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

  1. the analysis of proteins functioning as enzymes within the cell
  2. analysis of transport proteins in the cell
  3. the analysis of integral proteins of the cell membrane
  4. the study of all accumulated proteins of an organism
12.

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

  1. FAME
  2. PLFA
  3. MALDI-TOF
  4. Lancefield group testing
13.

Which method involves the analysis of membrane-bound carbohydrates?

  1. FAME
  2. PLFA
  3. MALDI-TOF
  4. Lancefield group testing
14.

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

  1. FAME
  2. proteomic analysis
  3. MALDI-TOF
  4. Lancefield group testing
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