Which of the following is found in spongy bone but not compact bone?
A. osteocytes in lacunae
B. hydroxyapatite
C. collagen
D. trabeculae
E. matrix
D
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Which of the following is the best explanation for our perception of color?
A) Rods contain a single kind of visual pigment. B) Cones come in three types, each sensitive to different wavelengths of light. C) The foveae are densely packed with cones. D) As many as 100 cones may converge on one ganglion cell.
All of the following things occur during meiosis I with the exception of one thing. Select the statement below that does not occur during meiosis I
A) A single diploid (2n) cell has become two haploid (n) cells. B) Portions of maternal chromosomes crossover with equivalent portions of paternal chromosomes. C) The sister chromatids are separated from each other. D) The homologous chromosomes are separated from each other.
What by-product results during the production of nitric oxide?
A) citrulline B) carbon dioxide C) nitric oxide synthase D) carbon monoxide E) arginine
Thin skin has only four epithelial strata. It lacks which of the following?
A. Stratum lucidum B. Stratum corneum C. Stratum spinosum D. Stratum basale E. Stratum granulosum