A patient experiencing septic shock presents with high fever and characteristic hypotension. This fast drop in blood pressure is expected, since widespread secretion of ________ from bacteria causes the innate immune system to trigger ________.
A. histamine; systemic vasodilation
B. exotoxin; systemic vasodilation
C. endotoxin; systemic vasodilation
D. interferon; systemic vasoconstriction
Answer: C
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If an organism is known to have a mutation in the DNA sequence of a gene that codes for an enzyme, but still produces a functional enzyme, which of the following is most likely TRUE?
A. Transcription of the gene into RNA is able to repair the mutation. B. Chaperone proteins are able to repair the error in the DNA sequence. C. The mutation did not lead to a change in the amino acid sequence of the enzyme. D. The mutation must have occurred in the part of the sequence coding for the active site.
Which of the following is not a function of the liver?
a. Metabolic processing of carbohydrates, proteins, and fats b. Secretion of proteolytic digestive enzymes c. Detoxification and/or degradation of body wastes, hormones, drugs, and foreign compounds d. Synthesis of plasma proteins essential to the clotting process e. Storage of glycogen, fats, iron, copper, and many vitamins
Which of these are found in pigs but NOT humans?
A) right primary bronchus B) apical bronchus C) trachea D) left primary bronchus
The midbrain, pons, and medulla oblongata are housed in the ________
A) diencephalon B) hypothalamus C) brain stem D) pineal gland E) cerebellum