Which of the following is not a method of heat sterilization?
A. Autoclaving
B. Heating in a dry air oven
C. Incineration
D. Pasteurization
Answer: D
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Different species of fruit flies occupy each of the islands in the Hawaiian island chain, a group of volcanic islands that formed one after the other
One hypothesis for how the different fruit fly species formed is that, after each new island was formed, fruit flies from existing islands colonized it and subsequently diverged. If this hypothesis is correct, it would be an example of: A. allopatric speciation by dispersal. B. allopatric speciation by vicariance. C. peripatric speciation by vicariance. D. sympatric speciation by dispersal. E. sympatric speciation by vicariance.
When chemoreceptors detect a slight decrease in pH, this means that __________ concentrations have
increased, and the breathing rate must __________. a. carbon dioxide; increase b. carbon dioxide; decrease c. oxygen; increase d. oxygen; decrease e. chloride; decrease
The evolutionary relationships between the eukaryotic supergroups are depicted in the diagram.Which of the following pairs of protists would be most closely related due to both of them possessing plastids?
A. archaeplastids & rhizaria B. archaeplastids & stramenopiles C. amoebozoans & excavates D. rhizaria & amoebozoans
Cephalosporins are NOT
A) wide spectrum antibiotics B) antibiotics with few side effects C) disruptors of cell membrane function D) used prophylactically in patients undergoing surgery