Any process that results in an increase in the free energy of the system is called ________.
Fill in the blank(s) with the appropriate word(s).
endergonic
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The brains of female zebra finches lack the hormonal influences that occur in the brains of males
What changes are seen in the female brains as a result?
a. Auditory processing centers are especially well-developed in females. b. More neurons are produced in the higher vocal center. c. Transcription is boosted in genes whose products are involved in memory retention. d. The number of neurons in the higher vocal center declines. e. Octopamine levels increase, stimulating neural transmissions.
Answer the following statements true (T) or false (F)
1. Mules are considered to be a distinct species because they produce fertile offspring when mated. 2. Among evolutionary biologists, the idea of sympatric speciation can be controversial. 3. Missing" transitional forms may not be present in the fossil record because of poor preservation of biological material and simply because scientists have not discovered all there is to discover. 4. The speciation that occurred in the islands of the Greater Antilles (i.e., Cuba, Puerto Rico, Jamaica, and Hispaniola) with lizards called anoles is an example of adaptive radiation. 5. The larger the initial population size, the less likely it will endure a major environmental change.
Viral infections are difficult to treat because
a. there are no drugs to treat virus infections. b. medicines can’t reach viruses inside cells. c. vaccines are ineffective against viruses. d. we do not yet understand how viruses work. e. all of these are true.
The emission of heat from any object is called
a. radiation. b. conduction. c. convection. d. denaturing. e. evaporation.