Most O2 is transported in the blood ____
a. dissolved in the plasma
b. as bicarbonate ions
c. bound to hemoglobin
d. as carbon dioxide
e. bound to bicarbonate ions
ANSWER: c
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Which of the following bacteria is associated with gastric and duodenal ulcers?
A) Campylobacter pylori B) Helicobacter pylori C) Salmonella enteritidis D) Shigella sonnei
One goal of pedigree analysis is to determine ____
a. what diseases a family will display b. if two people are related c. gene loci d. whether a gene has a dominant or recessive pattern of inheritance e. what treatment a person should undergo
Before a pathogen can be destroyed in the antibody-mediated process, a T helper cell must recognize
an __________ on the surface of a macrophage. a. antigen-MHC complex b. antibody c. interleukin d. HLA group e. antigen
Which of the following is a congenital immunodeficiency condition resulting from a small or absent thymus that affects young children?