People with type A blood have red blood cells that express one type of recognition protein, while those with type B
blood express a different recognition protein. People with AB blood express both recognition proteins. Why can a person
with AB blood receive blood from a person with type A, but a person with type A blood cannot received blood from a
person with type AB?
What will be an ideal response?
ANSWER: The glycoproteins present on the surface of red blood cells are markers that tell the body that
they are part of the individual rather than foreign. Patients with type A blood will recognize
the A recognition protein found in AB blood, but they will not recognize the B recognition
proteins. Therefore, the white blood cells from a type A person will attack the B antigens as
foreign. Patients with AB blood recognize both the A and B recognition proteins, so people
with AB blood will recognize the A blood, and not consider it foreign. Therefore, there will
be no rejection of the type A blood.
You might also like to view...
Match the following items with the correct phrases.
_______1. The ____________________ produced by Clostridium botulinum and Clostridium tetani are examples of virulence factors. _______2. The ____________________ produced by Clostridium perfringens and Streptococcus pyogenes are examples of virulence factors. _______3. _______________ are exoenzymes that cause clot formation. _______4. _______________ are exoenzymes that dissolve clots. _______5._______________ are produced by Clostridium difficile, Salmonella spp., Shigella spp., Vibrio cholerae, and certain serotypes of E. coli. a. coagulases b. enterotoxins c. kinases d. necrotizing enzymes e. neurotoxins
Which of the following statements is true about sex linked disorders? a. Only the mother's chromosomes will determine the sex linked disorders of all of her children
b. Both parents' chromosomes will influence their daughters sex linked disorders equally. c. The father's chromosomes will determine the sex linked disorders of his daughters. d. The mother's chromosomes will determine the sex linked disorders of her daughters. e. Only the father's chromosomes will determine the sex linked disorders of all of his children.
Rubbery cartilage, calcium-hardened bone tissue, lipid-storing adipose tissue, and blood are examples of specialized ____________________ tissues.
Fill in the blank(s) with the appropriate word(s).
The greatest annual input and least seasonal variation in solar radiation occurs in the
A) Southern Hemisphere. B) temperate zones. C) tropics. D) polar regions.