Class I MHC genes code for
A. all HLA antigens.
B. markers that display unique characteristics of self.
C. receptors located primarily on macrophages and B cells.
D. certain secreted complement components.
E. All of these choices are correct.
Answer: B
You might also like to view...
Some aerobic bacteria lack the Entner-Doudoroff and Embden-Meyerhoff pathways and instead use the pentose phosphate pathway for glycolysis.
Answer the following statement true (T) or false (F)
People who are lactose intolerant
A. produce inactive lactase. B. have a genetic polymorphism of the lactase gene that turns off lactase production after weaning. C. must drink soy (non-dairy) formula as infants. D. have a mutation in the promoter region of the lactase gene. E. have mutations in regulatory regions of the lactase gene.
One of the problems associated with assisted reproduction is that ____
a. technology for effective gamete freezing has not been developed b. the techniques for intrauterine implantation have not been fully explored c. deleterious recessive alleles can be passed on to offspring d. sperm cannot live outside the human body e. the potential harm to the mother is largely unknown
Disturbances in sensory neurons will result in an action potential if the
a. stimulus is graded. b. stimulus remains local. c. graded stimulus reaches a trigger zone. d. localized stimuli do not spread far. e. stimuli become downgraded to localized ones.