Most of the diseases caused by the members of the family Rickettsiaceae require a vector for the transmission of the diseases. Which of the following diseases does not require an arthropod vector?
A. Q Fever
B. Rocky Mountain Spotted Fever
C. Ehrlichiosis
D. Epidemic Typus
E. Endemic Typhus
Ans: A. Q Fever
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Septicemic plague usually causes death before a diagnosis can be made
Indicate whether the statement is true or false.
Which of the following is true of the topoisomerases found in bacteria?
A. Type I topoisomerases introduce single-stranded breaks and as a result change the linking number by 1. B. Type I topoisomerases introduce single-stranded breaks and as a result change the linking number by 2. C. Type II topoisomerases introduce single-stranded breaks and as a result change the linking number by 2. D. Type II topoisomerases introduce double-stranded breaks and as a result change the linking number by 1. E. Type I topoisomerases are the only category that can introduce negative supercoils.
Answer the following statements true (T) or false (F)
1. Temperature influences the solubility of gases in water. 2. All gases are equally soluble in water. 3. Fishes exhibit a method of ventilating their gills termed "tidal ventilation." 4. Mammals fill their lungs using a negative pressure mechanism. 5. The lungs of a bird expand as it inhales and contract as it exhales.
Why is it necessary to take an interdisciplinary approach to studying biology?
A. Research methods used to solve many biological questions often require a number of different types of approaches and the expertise of a variety of scientists. B. An interdisciplinary approach is the only way we can further our biological knowledge. C. Interdisciplinary approaches are required to answer all scientific questions since all disciplines borrow knowledge from each.