Which antibody makes up most of the
immunoglobulins in blood?
a. IgG
b. IgA
c. IgD
d. IgM
e. IgE
Answer: a
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The slow drifting of sections of the earth's crust, sometimes separating, other times colliding, is known as ________.
A. plate tectonics B. crust dynamics C. continental divergence D. continental convergence
A(n) ________ is composed of one sugar (deoxyribose or ribose), one phosphate, and one nitrogenous base
Fill in the blank(s) with correct word
In a nucleotide, the pho'sphate is attached to the ____________ carbon of the sugar, and the base is attached to the ____________ carbon of the sugar
A. 1'; 5' B. 2'; 3' C. 3'; 5' D. 5'; 1' E. 5'; 3'
The anthropoids of the Oligocene lived in
a. hot, dry deserts. b. grassy savannas. c. tropical rainforests. d. the watery swamps. e. cool and pleasant mountains.