Researchers Studying the Rigidity and Fexibility of the Cell Envelope

question 90

Multiple Choice

Researchers studying the rigidity and fexibility 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 fexible cell envelope because _______.

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

---

Definitions:

Sexual Motives

The reasons or driving forces behind individuals' sexual behaviors and attitudes.

Development of Personality

The process by which an individual's characteristic patterns of behavior, thought, and emotion emerge over time.

Alfred Adler

A psychologist known for founding the school of individual psychology, emphasizing the importance of feelings of inferiority and social interest.

Style of Life

A concept in Adlerian psychology referring to an individual's unique way of achieving superiority or success and overcoming feelings of inferiority.