Which of the following species of Mycobacterium causes a chronic disease of the skin, mucous membranes, and nerve tissue but has not yet been cultivated in vitro?
a. M. paratuberculosis
b. M. lepraemurium
c. M. phlei
d. M. leprae
D
Leprosy is both a bacterial and immunologic disease. Based on the host's response, the spectrum of disease caused by M. leprae ranges from subclinical infection to intermediate stages of disease to full-blown and serious clinical manifestations involving the skin, upper respiratory system, testes, and peripheral nerves. The two major forms of the disease are a localized form called tu-berculoid leprosy and a more disseminated form called lepromatous leprosy.
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Which of the following is composed of a 1:2:1 ratio of carbon to hydrogen to oxygen?
a. carbohydrate b. protein c. lipid d. nucleic acid e. steroid
Closed (simple)
What will be an ideal response?
Which molecule is not directly involved in the process of translation?
A) ribosome B) tRNA C) mRNA D) DNA
Photosynthetic organisms capture energy from sunlight and convert it into chemical bonds by forming
a. sugars. b. enzymes. c. work. d. substrates.