Biofilm infections are harder to treat than the same free-living organisms because

A. When part of a biofilm community, the bacterial cells express different genes thus changing their antibiotic susceptibility
B. Bacteria in a biofilm exist only on synthetic surfaces such as catheters, so they cannot be treated with antibiotics
C. The organisms in the biofilm degrade the antibiotics at a much faster rate than their free living counterparts
D. Organisms in a biofilm develop antibiotic resistance more rapidly than free living cells


Answer: C. The organisms in the biofilm degrade the antibiotics at a much faster rate than their free living counterparts

Biology & Microbiology

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An insertion sequence is distinguishable from other mobile genetic elements because ________.

A. it encodes a transposase B. it is composed of DNA C. it is highly complex D. it is smallest

Biology & Microbiology

Which of the following statements about plant macronutrients is/are true? (Check all that apply.)A) They approach or exceed 1% of a healthy plant's dry weight.B) They reduce the need for CO2 during photosynthesis.C) A deficiency in any one can have severe effects on a plant's growth.D) The amount of a macronutrient needed by a plant can be assessed by growing plants in hydroponic solutions.

What will be an ideal response?

Biology & Microbiology

The acetyl-CoA pathway is a primary route for carbon source utilization

Indicate whether the statement is true or false.

Biology & Microbiology

Which of the following variables is most likely to be a limited dependent variable, assuming that each variable will be featured as a dependent variable?

A. Labor productivity B. Weekly number of complaints C. Change in the number of faulty units D. GDP growth

Biology & Microbiology