Which of the following immune response is NOT a part of the innate immunity?
A) Antibody production by B cells
B) PAMP-PRR interaction
C) Phagocytic killing
D) Toxic oxygen production in phagocytes
E) Interferon production by macrophages
Ans: A) Antibody production by B cells
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Balanced polymorphism explains why carriers of cystic fibrosis are relatively resistant to
A) malaria. B) tuberculosis. C) diarrheal illness. D) pneumonia.
The information that directs the development of the fertilized egg is present in all of the following
EXCEPT
a. information in egg nucleus b. information in sperm nucleus c. mRNA in egg cytoplasm d. proteins in egg cytoplasm e. sperm cytoplasm
A study of a cohort of 1,000 newborn animals showed a death rate of 40% per individual in year one and a death rate
of 80% per individual in year two. The quantity of survivors after two years is about ____.
a. 120 b. 200 c. 320 d. 400 e. 1,000
The cells of a gametophyte are
A) tetraploid. B) haploid. C) triploid. D) diploid. E) unable to divide by mitosis.