What does the rolling circle model of replication refer to?
a. transfer of plasmid DNA from one cell to another
b. transfer of genomic DNA from one cell to another
c. all bacterial DNA replication
d. the multiple replication bubbles seen in prokaryotes
Answer: a. transfer of plasmid DNA from one cell to another
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Speciation that takes place when a physical barrier subdivides a large population is called ____ speciation
a. morphologic b. parapatric c. allopatric d. sympatric e. geographic
Males and females often differ in their reproductive strategies due to the fact that males can increase the number of
offspring they produce by ____ while females reproduce most successfully by ____.
a. mating with a high-quality female; mating with a high-quality male b. driving off other males; defending a productive territory c. defending a productive territory; enlisting multiple males to aid in raising her offspring d. mating with multiple females; mating with a high-quality male e. mating with multiple females; mating with multiple males
In both botulism and tetanus, respiratory muscles cannot facilitate breathing and, if untreated, respiratory collapse leads to death.
Answer the following statement true (T) or false (F)
Mild effects of cyanide exposure:
A) include slow, shallow respirations and generally require positive-pressure ventilatory assistance. B) can only be reversed with high doses of amyl nitrate and high-flow oxygen via nonrebreathing mask. C) include hemoptysis and hematemesis, and mandate immediate treatment with hyperbaric oxygen. D) generally resolve by simply removing the victim from the environment and administering oxygen.