Which of the following could result in hemolytic disease of the newborn?
A) Rh-negative mother and Rh-negative father
B) Rh-positive mother and Rh-positive father
C) Rh-positive mother and Rh-negative father
D) Rh-negative mother and Rh-positive father
E) either Rh-positive mother and Rh-negative father or Rh-negative mother and Rh-positive father
D
Bloom's Taxonomy: Comprehension
Section: Hypersensitivities
Learning Outcome: 18.7
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Starting from the outside and moving in toward the center, which gives the correct order of tissues in
the stem of a young tree?
a. secondary phloem, primary phloem, primary xylem, secondary xylem b. primary xylem, secondary xylem, secondary phloem, primary phloem c. primary phloem, secondary xylem, secondary phloem, primary xylem d. secondary phloem, primary xylem, secondary xylem, primary phloem e. primary phloem, secondary phloem, secondary xylem, primary xylem
Which of the following sampling techniques represents an index of abundance rather than an estimate of density?
A) number of oak trees within a quadrat B) number of bear droppings along a trail C) ratio of marked and unmarked mice in a field D) number of ducks on a pond
Many scientists consider birds to be little more than feathered dinosaurs.
Answer the following statement true (T) or false (F)
Which of the following describes the Lac operon in E. coli when lactose, but not glucose, is present in the culture medium?
A. CAP and the Lac repressor are both bound to the Lac operon's regulatory DNA, and the Lac operon is not expressed. B. Neither CAP nor the Lac repressor is bound to the Lac operon's regulatory DNA, and the Lac operon is expressed. C. Neither CAP nor the Lac repressor is bound to the Lac operon's regulatory DNA, and the Lac operon is not expressed. D. CAP, but not the Lac repressor, is bound to the Lac operon's regulatory DNA, and the Lac operon is expressed. E. The Lac repressor, but not CAP, is bound to the Lac operon's regulatory DNA, and the Lac operon is not expressed.