BIOLOGY 206 OpenStax Microbiology Test Bank- Chapter
7: Microbial Biochemistry
Chapter 7: Microbial Biochemistry
* = Correct answer
Multiple Choice
1. Which of the following is the best definition of a macronutrient?
A. a trace element
B. a vitamin
C. an organic molecule necessary for lif...
1. Which of the following is the best definition of a macronutrient?
A. a trace element
B. a vitamin
C. an organic molecule necessary for life
D. the most abundant elements found in living cells*
Difficulty: Easy
ASM Standard: N/A
2. Amino groups are an important component of which of the following macromolecules?
A. carbohydrates
B. lipids
C. nucleic acids
D. proteins*
Difficulty: Easy
ASM Standard: N/A
3. The building blocks of polymers are called which of the following?
A. inorganic molecules
B. macromolecules
C. monomers*
D. nucleic acids
Difficulty: Easy
ASM Standard: N/A
4. Which of the following is not one of the four major types of carbon-based macromolecules
found in cells?
A. carbohydrates
B. lipids
C. macronutrients*
D. nucleic acids
Difficulty: Easy
ASM Standard: N/A
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, 5. In which form do plants generally store sugar molecules?
A. cellulose
B. chitin
C. glycogen
D. starch*
Difficulty: Easy
ASM Standard: N/A
6. Which term specifically describes fatty acids that do not have any double bonds, triple bonds,
or rings?
A. esterified
B. polyunsaturated
C. saturated*
D. unsaturated
Difficulty: Easy
ASM Standard: N/A
7. Which of the following best describes the difference between steroids and sterols?
A. Steroids are the most common type of sterol.
B. Steroids contain rings, whereas sterols do not.
C. Sterols are a type of steroid with an OH group.*
D. Sterols are present in prokaryotes and steroids are not.
Difficulty: Moderate
ASM Standard: N/A
8. Which best describes oligopeptides?
A. a molecule consisting of two amino acids
B. long chains of amino acids
C. polymers of about 20 amino acids*
D. polymers of about 50 amino acids
Difficulty: Easy
ASM Standard: N/A
9. Which of the following is not a lipid?
A. a fatty acid
B. a glyceraldehyde*
C. a wax
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, D. n isoprenoid
Difficulty: Easy
ASM Standard: N/A
10. How omany osingle ocovalent obonds ocan ooxygen oform?
A. one
B. two*
C. three
D. four
Difficulty:
oModerate oASM
oStandard: oN/A
11. Which oof othe ofollowing omolecules ois oan oorganic omolecule?
A. CO2
B. CaCO3
C. CH3OH*
D. H2O
Difficulty:
oModerate oASM
oStandard: oN/A
12. Which oof othe ofollowing ois othe obest oexample oof oa omicronutrient?
A. carbon
B. nitrogen
C. phosphorus
D. potassium*
Difficulty: oEasy
oASM oStandard:
oN/A
13. Which oof othe ofollowing obest odescribes oglucose, ofructose, oand ogalactose?
A. achiral
B. enantiomers
C. stereoisomers
D. structural oisomers*
Difficulty:
oModerate oASM
oStandard: oN/A
14. Why odoes oit omatter owhich oenantiomer oof oa omolecule ois oused ofor oa omedication?
A. Enantiomers ocan ohave odifferent opharmacologic oeffects oand oonly oone omay obe
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