Which of the following is an animal virus?
A. tobacco mosaic virus
B. T4 virus
C. chicken pox virus
D. lambda virus
C. chicken pox virus
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What term describes a set of genes that is controlled by a common regulatory protein?
A. Codon B. Transcription C. Regulon D. Kinase
Which of the following descriptions best fits viroids?
a. prokaryotic cells that live on or in animal cells b. a DNA or RNA genome with a protein coat c. a single-celled eukaryote classified with the fungi d. the smallest pathogens made of naked circular RNA
Fluid inside most human cells is about
a. pH 7. b. pH 9. c. pH 4. d. pH 11. e. pH 2.
Water soluble hormones ____
a. are derived from cholesterol b. interact with DNA receptors c. include estrogen and testosterone d. pass through target cell membranes e. require second messenger systems