The degree to which a microbe is able to cause disease is known as its (morbidity/virulence/toxicity).
Fill in the blank(s) with the appropriate word(s).
virulence
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Select the correct sequence of events involved in regulating secretion of thyroid hormones
1. pituitary releases thyroid-stimulating hormone (TSH) 2. hypothalamus secretes thyroid-releasing hormone (TRH) 3. thyroid hormones inhibit long-term TRH secretion 4. thyroid secretes thyroid hormones 5. thyroid hormones inhibit TSH secretion
a. 1, 2, 4, 5, 3 b. 2, 1, 4, 5, 3 c. 3, 1, 4, 5, 2 d. 3, 4, 1, 2, 5 e. 2, 4, 5, 1, 3
Most burrowing animals of estuaries exchange gases with their environment through their skin
Indicate whether the statement is true or false
Which of the following males in a given population would be considered the most fit in an evolutionary sense?
A) one that produced 100 offspring, of which 10 survived but 9 did not reproduce B) one that produced two offspring, both of which survived and produced offspring of their own C) one that produced 1,000 offspring, of which 100 survived but 99 did not reproduce D) one that produced 1,000 offspring, all of which died before reaching reproductive age
The infectious doses for various bacterial infections are listed in the table below. Which of these bacteria would likely have the greatest virulence? Bacterium Infectious Dose (ID) Mycobacterium tuberculosis 10 Neisseria gonorrhoeae 1,000 Vibrio cholerae 1,000,000,000 Salmonella enterica 10,000
A. Vibrio cholerae B. Salmonella enterica C. Mycobacterium tuberculosis D. Neisseria gonorrhoeae