Whenever energy is transformed, there is always an increase in the _____
A) free energy of the system
B) free energy of the universe
C) entropy of the system
D) entropy of the universe
E) enthalpy of the universe
Answer: D
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Which of the following will increase the speed of an action potential moving down an axon?
I) Action potentials move faster in larger diameter axons. II) Action potentials move faster in axons lacking potassium ion channels. III) Action potentials move faster in myelinated axons. A) only I and II B) only II and III C) only I and III D) I, II, and III
A good average value for the amount of energy that reaches the next trophic level is about
A. 20%. B. 10%. C. 5%. D. 2%. E. 1%.
When communities of organisms interact with their physical environment they form a(n)
A. population. B. organism. C. community. D. ecosystem. E. macromolecular community.
Eating as little as ___ grams of trans fats can
increase a person’s risk for a variety of diseases.
a. one b. two c. three d. four e. five