Mycobacterium and Nocardia are different from most gram-positive bacteria in that their cell walls
A. contain unique, waxy lipids.
B. contain more peptidoglycan.
C. are easily decolorized during staining.
D. contain a layer of lipopolysaccharide.
Answer: A
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Indicate whether the statement is true or false
Where within the nervous system do cells determine the exact nature of an odor sensation?
a. nasal passages b. nasal epithelium c. olfactory bulb d. thalamus e. cerebral cortex
The bubonic plague epidemic that swept through Europe between 1348 and 1350 A.D. was induced by a(n)
A) virus. B) prion. C) protozoan. D) bacterium. E) unidentified eukaryotic organism.
Which of the following interactions is the molecular basis of muscle contraction?
A. Myosin and thick filaments. B. Sarcomeres and T tubules. C. Myosin and thin filaments. D. Troponin and tropomyosin