5. Molecules of Microbiology

Organic molecules are defined as chemical compounds that contain:

a) Carbon.

b) Carbon & Oxygen.

c) Carbon & Nitrogen.

d) Carbon & Hydrogen.

Classify the following as subunits of either a carbohydrate, lipid, protein, or nucleic acid.

a. <IMAGE>

b. <IMAGE>

c. <IMAGE>

d. Thymine nucleotide

Which of the following is an organic molecule?

a. H₂O (water)

b. O₂ (oxygen)

c. C₁₈H₂₉SO₃

d. FeO (iron oxide)

e. F₂C=CF₂ (Teflon)

In the carbon cycle, microbes convert _____.

a. CO2 into organic material for consumption

b. CO2 into inorganic material for storage

c. fossil fuels into usable organic compounds

d. oxygen into water as a by-product of photosynthesis

_____ Plants and bacteria start the carbon cycle with consumption.

Carbon fixation is the conversion of _____ into organic compounds.