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6 Cards in this Set

  • Front
  • Back
Extremophiles are most commonly what type of microorganism?
Archae
Substances required by living organisms in relatively large quantities and which play principle roles in cell structure and metabolism are known as what?
Macronutrients
Define a heterotroph?
An organism that must obtain its carbon in an organic form.
Molecules that satisfy heterotrophic nutritional requirements include all but which of the following?
100.0%
a. Water
0.0%
b. Nucleic acids
Review "Carbon Sources" in the text for more information.
0.0% c. Lipids
0.0% d. Carbohydrates
0.0% e. Proteins
Nitrogen is required for the production of what category of molecules?
0.0% a. Fatty acids
0.0% b. Phospholipids
100.0%

c. Nucleotides
Correct!
0.0% d. Carbohydrates
0.0% e. Cellulose
The primary sources of nitrogen for heterotrophs include all except which of the following?
0.0% a. Proteins
0.0% b. DNA
100.0%
c. Glucose
0.0% d. RNA
0.0%
e. Amino acids
The section in the text regarding "Nitrogen Sources" contains the answer to this question.