Why Do Some Members of a Biofilm Community Live Deep

question 47

Multiple Choice

Why do some members of a biofilm community live deep within the biofilm?

• A) They are not flagellated.
• B) They produce fewer exopolysaccharides.
• C) They were the first organisms to initiate attachment.
• D) Antibiotics do not penetrate deep into biofilms.
• E) Oxygen does not penetrate deep into biofilms.

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Definitions:

Observer Bias

A form of research error that occurs when an observer's expectations or personal beliefs influence their interpretation of experimental outcomes.

Ecological-Systems Approach

A perspective on human development that considers all of the influences from the various contexts of development. (Later renamed bioecological theory.)

Bronfenbrenner

A psychologist known for his ecological systems theory, which considers the complex interrelations between individual development and environmental factors.

Microsystem

A part of the ecological systems theory that refers to the immediate environment in which an individual interacts, such as family, school, peers, and workplace.