When Pavlov's dog salivated after hearing a bell, this exemplified
A. classical conditioning.
B. operant conditioning.
C. habituation.
D. nonassociative learning.
Answer: A
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Type II survivorship curves:
a. are characteristic of humans and elephants b. typify a population in which all ages have an equal chance of surviving c. indicate a high mortality rate in the very young d. show that very few young are produced, that each is given parental support, and that most individuals live a relatively long life and die of old age e. are typical of mammals
You just returned from a hiking/camping trip and are experiencing symptoms of an infection: high fever, swollen lymph nodes, and black-and-blue marks or hemorrhages under the skin. Your doctor asks if you have been in the four corners area of the U.S. (where the states of Arizona, Colorado, New Mexico, and Utah all meet). What does the doctor suspect?
A. Hemorrhagic fever is often associated with bats in that region of the U.S. B. Since there are many mosquitoes in that area, you might have been infected with Plasmodium. C. Those four states have high rates of Chikungunya, which is what the doctor suspects that you have. D. You might have picked up the plague bacterium from fleas that normally feed on rodents in that area.
____ is NOT a product of the Kreb cycle.
A. Pyruvic acid B. ATP C. NADH2 and FADH2 D. CO2
Which of the following is not considered a macronutrient?
A. Cobalt (Co) B. Potassium (K) C. Calcium (Ca) D. Carbon (C)