Macrophages and dendritic cells are
A. T cells.
B. B cells.
C. antigen-presenting cells.
D. antibody-producing cells.
C
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Many pharmaceutical drugs specifically inhibit transcription in Bacteria but not Archaea or Eukarya. Why would drugs that inhibit transcription only affect Bacteria and not Archaea even though they are both prokaryotes?
A) Archaea and Eukarya have very similar ribosomes that are different than bacterial ribosomes. B) Bacteria lack a nucleus. C) Archaea lack operons. D) Archaea and Eukarya have very similar RNA polymerases that are different than bacterial RNA polymerases.
What are rounded pads of fatty tissue lying along both sides of the vaginal opening and are covered with pubic hair?
A. labia majora B. fallopian tubes C. labia minora D. seminiferous tubules
Dr. Rebecca Lancfield used which of the following in her classification of the Streptococci?
A. The F protein B. The M-like protein C. The M protein D. The haemolytic pattern of the bacteria E. The C-carbohydrate (moiety) antigen in the cell wall
Which of the following is a difference between gram+ and gram- cells?
a. gram+ cells contain less peptidoglycan than gram- cells b. gram- cell walls contain more peptidoglycan than gram+ cells c. only gram+ cells have peptidoglycan d. only gram- cells have a lipopolysaccharide layer