A Research Laboratory Is Investigating Environmental Factors That Would Inhibit

question 9

Multiple Choice

A research laboratory is investigating environmental factors that would inhibit the growth of Archaea. One question they have is whether adding the antibiotic penicillin would be effective in controlling their growth. What do you think the outcome would be if they tried this?

• A) The penicillin wouldn't affect the Archaea because it prevents cross-linking of peptidoglycan and Archaea don't have this compound in their cell walls.
• B) The penicillin will inhibit peptidoglycan synthesis and thus cell wall formation in the Archaea, killing them.
• C) The penicillin will slow down the growth of the Archaea by damaging the cell wall, but they will still be able to grow somewhat.
• D) The penicillin will enhance the growth of the Archaea by providing a rich nutrient source.
• E) The penicillin will inhibit cell division in the Archaea, forcing them to form endospores.

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Definitions:

Apothecary System

An older system of measurement that includes units such as fluid ounces, fluid drams, pints, and quarts.

Metric System

A decimal system of measurement based on the meter, liter, and gram as units of length, capacity, and weight or mass, respectively.

Fluid Dram

A unit of volume in the apothecaries' system, equivalent to 1/8 of a fluid ounce.

Metric Equivalent

Metric equivalent is the corresponding value of a measurement expressed within the metric system, used for converting units like inches to centimeters.