The disinfecting properties of Lysol, a common household disinfectant, depend upon the presence of ________.
What will be an ideal response?
phenolics
phenol
phenol derivatives
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Plasma cells and memory cells are types of ________ lymphocytes; both types of cells secrete proteins called ________ as part of the immune response
Fill in the blank(s) with correct word
Mendeleev found that when he arranged the known elements according to their atomic mass, the entries in the table exhibited a pattern of chemical properties that repeated itself in groups of eight elements. This led to the generalization now known as:
A. an atomic model. B. the periodic table. C. valance electrons. D. the octet rule.
In eukaryotes there are several different types of RNA polymerase. Which type is involved in transcription of mRNA for a globin protein?
A) RNA polymerase I B) RNA polymerase II C) RNA polymerase III D) primase
Many cells of the immune system have receptors that detect peptidoglycans and lipopolysaccharides. How do pathogenic bacteria avoid detection?
A. Pathogenic bacteria lack cell walls. B. Disease is only possible if the immune system has been compromised by some other event. C. Peptidoglycans are absent from pathogenic bacteria. D. Pathogens often encase themselves in a gelatinous capsule.