Researchers Studying the Rigidity and Flexibility of the Cell Envelope

question 60

Multiple Choice

Researchers studying the rigidity and flexibility of the cell envelope used chemotaxis to measure the ability of microbes to squeeze through tight spaces. E. coli, a gram-negative bacterium, was able to traverse narrower channels than B. subtilis, a gram-positive microbe, even though both cells are the same size when grown without restriction. E. coli has the more flexible cell envelope because

• A) lipopolysaccharide has no charge.
• B) it has fewer flagella.
• C) it has only a single membrane.
• D) there is less structural carbohydrate.
• E) there are fewer protein receptors.

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Definitions:

Union Demands

Requests or requirements set forth by labor unions during negotiations with employers, relating to wages, benefits, working conditions, and other employment terms.

Customer Encouragement

Strategies or practices designed to motivate or persuade consumers to engage with, purchase, or support a product or service.

Union Demands

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