The transfer of antibodies in breast milk is a good example of
A. artificially acquired active immunity.
B. artificially acquired passive immunity.
C. naturally acquired active immunity.
D. naturally acquired passive immunity.
Answer: D
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The constant region of a light chain is indicated by
a. A. b. B. c. C. d. D. e. E.
Overall, genes are unevenly distributed along their chromosomes. Indicate whether the statement is true or false
Which of the following methods or steps has NOT been shown to allow DNA to enter cells?
A) Electroporation B) Transformation C) Heat shocking of cells at 42ºC D) CaCl2 treatment of cells E) Restriction DNA analysis
Why is the cohesion of water important for biological systems?
A) It helps to moderate the temperature of cold-blooded animals. B) It helps transport water from the roots to the leaves of a plant. C) It prevents chemical reactions from occurring in body systems. D) It prevents salts from dissolving inside the plasma membrane.