)
A. They exhibit a low degree of selective toxicity.
B. All are completely safe for routine use in patients.
C. They are lipid-like in structure enhancing their ability to affect cell membranes.
D. Polymyxin and daptomycin are examples of cell membrane-targeting drugs.
E. Resistance to these drugs is rising due to NDM enzyme production.
B. All are completely safe for routine use in patients.
E. Resistance to these drugs is rising due to NDM enzyme production.
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Members of the genus Veillonella are part of the normal microflora of the
A. mouth. B. upper and lower respiratory tract. C. sweat glands and hair follicles. D. stomach.
The 5' end of a DNA molecule can be chemically distinguished from the 3' end because there is a(n) __________ group at the 5' end and a(n) __________ group at the 3' end.
A) NH3; COOH B) PO4; SO4 C) OH; H D) PO4; OH E) none of the above
__________ and __________ are single-celled heterotrophs with a secreted shell. Fill in the blank(s) with the appropriate word(s)
You notice a sign in a public restroom that states "Sanitized for your safety." This means
A) sterilizing chemicals have been used in cleaning. B) antiseptics have been used to clean the area. C) degerming methods only have been used to clean the restroom. D) methods of disinfection that meet minimum standards of microbial removal have been used. E) only "organic" chemicals were used in the cleaning process to reduce microbial numbers.