What is the main function of the bacterial cell wall?
a. Synthesis
b. Excretion
c. Reproduction
d. Protection
Answer: d. Protection
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Inversion loops can occur in
A. paracentric inversions. B. pericentric inversions. C. gene duplications. D. reciprocal translocations. E. both paracentric inversions and pericentric inversions
An example of evolutionary divergence is best characterized by Darwin's observation of ____
a. fossils along the coast of Argentina b. body armor similarities between armadillos and fossilized glyptodonts c. differences in appearance of nutria and beaver d. differences in bill shape and food habits of finches e. the great variety of form of species
Each carbon atom can share pairs of electrons with as many as ____ other atoms
a. 2 b. 3 c. 4 d. 5 e. 6
This mercury-containing chemical was once found in vaccines and thought to cause autism spectrum disorder (ASD)
A) thimerosol B) thalidomide C) PDD-NOS D) thiamin