#Question id: 20242
#XL - P Chemistry
#Question id: 5241
#XL - T Zoology
Genes a, b, and c are widely spaced in the bacterial genome. Transducing phage from an a+ b+ c+ bacterium were used to infect a culture of a- b- c- cells, and b+ transductants were selected. Which of the following best describes the predicted genotypes of these transductants?
#Question id: 1730
#XL - Q Biochemistry
What is the T-cell ligand binding B7 on a professional antigen-presenting cell?
#Question id: 8773
#XL - T Zoology
Which eukaryotic kingdom includes members that are the result of endosymbioses that included an ancient aerobic bacterium and an ancient cyanobacterium?
#Question id: 1688
#XL - Q Biochemistry
Binding of antigen to antibody: