An intermediary inanimate object from which an infectious agent is acquired is termed a ________.
A. carrier
B. vector
C. reservoir
D. fomite
Answer: D
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All of the following are critical factors for DNA replication on the leading strand except?
A. primer. B. DNA ligase. C. DNA polymerase. D. DNA primase. E. deoxynucleoside triphosphates.
Which of the following would be a modern
example of Lamarckianism? a. A strain of houseflies resistant to insecticides emerges. b. Squirrels separated by a river are found to be unable to interbreed. c. A son is born with a portion of his right index finger missing--the same portion that was severed from his father's hand in an accident. d. A strain of houseflies resistant to insecticides emerges, and squirrels separated by a river are found to be unable to interbreed. e. A strain of houseflies resistant to insecticides emerges; squirrels separated by a river are found to be unable to interbreed, and a son is born with a portion of his right index finger missing--the same portion that was cut off from his father's hand in an accident.
Adaptations include all of the following EXCEPT
A) larger body size in male gorillas, which fight over females. B) inborn migratory behavior of young birds born in the Arctic. C) reduced heart rate and oxygen consumption in seals that dive deep for long periods of time. D) teaching a pet parrot to talk.
A young patient presents with a small invagination of the skin on the anterolateral neck, just below the jaw. The CT scan of this patient indicates a cervical (pharyngeal) cyst connected to it. What term describes the invagination?
A. Ectopic thymus B. External Branchial Fistula C. Internal Branchial Fistula D. Pharyngeal Cleft E. Pharyngeal Pouch