When humans manipulate the genes of microorganisms, the process is called ________.
A. epidemiology
B. genetic engineering
C. immunology
D. bioremediation
E. taxonomy
Answer: B
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Honeybee workers spend their first few weeks as young adults tending the colony's brood, then later shift jobs to foraging for food outside the colony
When researchers fed the young bees candy spiked with the molecule ethyl oleate, the young bees continued to babysit and delayed the job shift to foraging. What would it require to demonstrate that ethyl oleate normally acts as a pheromone, not as an endocrine or paracrine signal? A. It would require demonstration that ethyl oleate binds to a receptor and initiates a series of responses. B. It would require demonstration that ethyl oleate is released by another individual of the same species. C. It would require demonstration that ethyl oleate is released by a predator and causes a behavioral change in the prey.
In addition to electrons, which of the following is also involved in electron transfer?
A. Glucose B. Hydrogen C. ADP D. Carbon E. Carbon dioxide
Which species is overexploited rather than invasive?
A. zebra mussels in the Great Lakes B. brown tree snakes in Guam C. bison in the North American plains D. marine toads in Florida E. gypsy moth caterpillars in North America
What separates the thoracic cavity from the abdominal cavity?
A. the trachea B. the bronchus C. the diaphragm D. the pleural membrane