Cells in the body that have been infected by a virus or bacteria are specifically killed by:
A) cytotoxic B cells.
B) regulatory T cells.
C) cytotoxic T cells.
D) dendritic cells.
E) mast cells.
Answer: C
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The general term used to describe the anabolic and catabolic reactions in a cell is
A. enzymatic. B. thematic. C. aerobic respiration. D. metabolism.
Leks are places where male:
a. hanging flies offer female flies meals of dead insects b. fiddler crabs wave their oversized claws to attract female crabs c. bison lock horns and wrestle for dominance d. midwife toads care for strings of eggs e. sage grouse display to attract females
Carl Woese's evolutionary studies that led him to propose the three domain taxonomic system compared nucleotide sequence present in:
A) the nuclei of eukaryotic cells B) 16S rRNA genes C) cyanobacteria D) thermophiles E) DNA polymerase genes
Infection by which of the following is often confused with viral pneumonia?
A) Blastomyces B) Coccidioides C) Mycoplasma D) Streptococcus E) Mycobacterium