The problem with defining abnormal behavior is that ____

a. too many disorders have similar phenotypes
b. some behaviors are not abnormal, but simply variants
c. biological factors related to abnormal behavior are not known
d. mental illness is multifactorial, and therefore, cannot be defined

e. twin concordance studies mental illness is due mostly to environmental components


b

Biology & Microbiology

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Available evidence is consistent with the proposal that prion diseases are caused by infectious proteins.

Answer the following statement true (T) or false (F)

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What embryonic structures are common in all chordates?

A) pharyngeal slits B) arrector pili C) gametophytes D) vertebrae

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The Oxidase Test is used to determine which of the following characteristics of a bacterium?

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The growth pattern in Figure 20.1 is characteristic of which organism?

A. Klebsiella B. Proteus C. Pseudomonas D. Salmonella E. Shigella

Biology & Microbiology