Mothers are encouraged to breastfeed their newborns if possible because the breastmilk provides:
a. naturally acquired active immunity
b. naturally acquired passive immunity
c. artificially acquired active immunity
d. artificially acquired passive immunity
Ans: b. naturally acquired passive immunity
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If you were told to use a fluorescent antibody that binds to sodium channels to view the origin of nerve impulses, what area on the neuron would have the greatest antibody fluorescence?
A. trigger zone B. axon C. synapse D. Schwann cell E. dendrite
How does ecological economics provide a more realistic approach than neoclassical economics?
A. Ecological economics recognizes that certain raw materials are non-renewable. B. Ecological economics eliminates the cost-benefit analysis approach. C. Ecological economics is based on the concept of the "invisible hand". D. Ecological economics attempts to consider the value of ecosystem services. E. Both A and D are correct.
What is the name of the small circles of DNA that occur in bacteria in addition to the main circular chromosomal DNA molecule?
a. plasmids b. plastids c. transformants d. plasmitrons
The key evolutionary development seen for the first time in the sponges is that of
A. multicellularity. B. major organ systems. C. a complete digestive tract. D. body symmetry.