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Ms. Hungh, a Burmese immigrant, enters your clinic with her interpreter complaining of fatigue, weight loss, persistent cough, and rust-colored sputum. The interpreter explains that Ms. Hungh has had this cough for many months in her home country and, now that she is in America, is seeking assistance for her condition. Culturing of the sputum resulted in the growth of distinct colonies on the medium, and the technician informs you that further isolation by subculturing is now needed. You understand that this is accomplished by taking a bit of growth from an isolated colony and inoculating a separate medium, resulting in the production of a    

Which statement describes why gram-negative organisms are more sensitive to lysis (rupture) than gram-positive organisms?  

 The lipopolysaccharide layer of the outer membrane of  gram negative bacteria  

The decolorizing agent used in the gram stain is  

DNA similarity of 75% between two organisms    

You advise a patient who is losing weight that it is important for him to maintain a diet rich in carbohydrates, lipids, and proteins, so that each of these macromolecules can be metabolized to form a high-energy compound called 

Negative staining is useful for observing the presence of what?  

In viewing a microscopic specimen, oil is used to  

Which of the following is essential for development of discrete, isolated colonies?

Which of the following is a taxon that contains all the other taxa listed?