Inherited genetic information is coded in molecules of _____.
A) RNA
B) DNA
C) proteins
D) amino acids
Answer: B) DNA
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Which cell structure is most likely responsible for sensing gravity?
A. chloroplast B. amyloplast C. apical meristem D. central vacuole E. Golgi apparatus
The immunoglobulin class that is the only one capable of crossing the placenta is
A. IgA. B. IgE. C. IgM. D. IgG. E. IgD.
The transmission of enteric hepatitis is most effectively prevented by
A. safe sex practices. B. immunization. C. reducing aerosol dispersion. D. vector control. E. good public sanitation and personal hygiene.
Answer the following statements true (T) or false (F)
1. Chemical defenses are found only among animals. 2. The mimicry of coral snakes by scarlet king snakes is an example of Batesian mimicry. 3. Fleas are endoparasites. 4. Phoretic species are commensals.