Which of the following is not true of Streptococcus pneumoniae?
A. It produces an alpha-hemolysin and hydrogen peroxide.
B. It has a polysaccharide capsule that resists phagocytosis.
C. It is a small, gram-negative coccus.
D. It is the most frequent cause of community-acquired meningitis.
Answer: C
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The middle layer of the skin
(a) is called the dermis. (b) is primarily connective tissue. (c) contains collagen fibers. (d) is all of the above.
Which of the following terms describes the process by which a fertilized egg develops into a multicellular organism with hundreds of different cell types, each with different structures and functions?
A. adhesion B. differentiation C. communication D. embryology
Organisms that are used to decontaminate soils
may a. store the contaminants in their tissues. b. release pollutants into the air. c. degrade the pollutants. d. be any plant species. e. store the contaminants in their tissues, release pollutants into the air, and degrade the pollutants.
The organization of tissues in the accompanying figure is characteristic of a:
a. stem. b. spine. c. leaf blade. d. petiole. e. bud scale.