Beta-lactam antibiotics have an effect on which of the following types of cells?
A) animal cells
B) bacterial cells
C) fungal cells
D) virus-infected cells
E) both animal and fungal cells
B
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Newly emerging or reemerging diseases
A. may be due to changing lifestyles. B. are exemplified by Lyme disease and toxic shock syndrome. C. may reflect a breakdown in sanitation/social order. D. may be related to global cooling. E. may be due to changing lifestyles, are exemplified by Lyme disease and toxic shock syndrome, AND may reflect a breakdown in sanitation/social order
The majority of mammal species living today are ____, or placentals, including such diverse groups as rodents, bats,
whales, and primates.
a. protherians b. therapsids c. anthropoids d. eutherians e. metatherians
Human female germ cells form ____
a. before birth b. shortly after birth c. at puberty d. during late teenage-hood e. at fertilization
Which characteristic promoted the utilization of lipids as the first cell membrane?
A) spontaneous degradation of the intracellular environment B) self-assembly into a simple membrane C) ability to form an impermeable membrane D) formation of a semi-solid membrane