What is the primary function of the endocrine system?
A. Conduction
B. Contraction
C. Hormonal control of the body
D. Protection against disease
E. Cell production
Answer: C
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Which of the following statements is false?
A. Oxygen debt is the difference between an animal's immediate need for oxygen at the start of activity versus energy supplied by anaerobic metabolism. B. Recovery metabolism involves increased heart rates and respiration rates. C. An animal's oxygen consumption remains elevated for a brief period after activity ends. D. Recovery metabolism allows a cell to replenish depleted ATP stores and metabolize lactic acid. E. None of these statements is false.
The cell membrane is composed of a ________ bilayer. This molecule has regions that are polar and nonpolar and is therefore ________.
Fill in the blank(s) with the appropriate word(s).
An elderly man with chronic heart and lung disease develops Legionella pneumonia. By what route was the infection most likely to have been acquired?
a. Respiratory route, from an infected person b. Inhalation of aerosolized water from a source containing protozoa c. Inhalation of spores from moldy hay d. Exposure to livestock or animal products
Suppose you discover a new species of animal that does not have body segments, but is triploblastic, eucoelomate, and cephalized. Under the molecular phylogenetic scheme, you would allocate it to which phylum?
A. Mollusca. B. Echinodermata. C. Nematoda. D. Platyhelminthes. E. Arthropoda.