Which of the following describes a complete defense system?
A) antibodies of the adaptive humoral immune response and interferons
B) antibodies of the adaptive humoral immune response and components of innate immunity
C) phagocytosis only
D) complement system only
Answer: B
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An example of an irreversible inhibitor is
A) a competitive inhibitor. B) acetylcholinesterase. C) a noncompetitive inhibitor. D) penicillin. E) isoleucine.
Which of the following are features that make Bacillus anthracis a potential bioterrorism weapon?
A. Vaccination is not widespread in the United States. B. Pulmonary anthrax is rapidly fatal. C. It forms endospores that can be stored in powder form indefinitely. D. It is naturally occurring worldwide in soil, and intentional release may not be suspected. E. All of these choices are correct.
Four of the five answers listed below are related by the same gender. Select the exception
a. megaspore b. integuments c. embryo sac d. microspore e. egg
Which of the following does NOT contribute to variability of the offspring in sexual reproduction?
a) the different ways homologous can separate in Metaphase I b) crossing over in Prophase I of meiosis c) a brother and a sister producing children together d) the swapping of genetic information between homologues during meiosis e) combining genes from two unrelated parents during fertilization