Staphylococcus aureus can produce a toxin that dissolves the desmosomes that hold the adjoining cytoplasmic membranes of cells together and causes the patient's skin cells to separate
Indicate whether the statement is true or false
TRUE
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In an isolated population of fruit flies, 4 percent of the individuals have "pink eyes", a homozygous
recessive condition, and 96 percent have the dominant black eye phenotype. What percentage of the population are heterozygotes?
a. 32 percent b. 16 percent c. 48 percent d. 88 percent e. 4 percent
The second law of thermodynamics states that
a. energy can be transformed into matter, and because of this, something is obtained for nothing. b. energy can be destroyed during nuclear reactions such as those that occur inside the sun. c. if energy is gained by one region of the universe, another place in the universe also must gain energy in order to maintain the balance of nature. d. energy tends to flow from concentrated to less concentrated forms. e. none of these is true.
Positive correlations have been found between ________
A) telomere lengths and longevity among individuals within populations B) telomere lengths and longevity across many species of mammals C) telomere lengths and longevity among individuals within populations and across many species of mammals D) neither telomere lengths and longevity among individuals within populations nor telomere lengths and longevity across many species of mammals
What is the correct order for the application of Koch's postulates? I. Inoculate suspect agent into test subject and observe that subject develops disease of interest. II. Isolate and culture suspect agent in the laboratory. III. Find suspect agent is every case of disease of interest but not in healthy hosts. IV. Recover and isolate suspect agent from test subject
A) III, I, IV, II B) IV, I, III, II C) I, II, III, IV D) III, II, I, IV E) IV, I, II, III