Lions in east African safari parks learn to ignore the presence of safari vehicles. This form is learning is
A. compensatory.
B. operant.
C. cognitive.
D. sign stimulus.
E. habituation.
E. habituation.
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Azidothymidine (AZT) is mentioned in your book as an HIV drug. AZT is a reverse transcriptase inhibitor. That means AZT is only effective during the ______ stage of the viral life cycle
A. entry B. integration C. viral assembly D. release
Match the following items with the correct phrases.
_______1. Cold sores and shingles are examples. _______2. The same as a subclinical disease. _______3. A disease that has an insidious (slow) onset and lasts a long time. _______4. A disease that has spread throughout the body. _______5. A disease that has a sudden onset, but does not last long. a. acute disease b. asymptomatic disease c. chronic disease d. latent disease e. systemic disease
Which of the following is used during the fight-orflight
response? a. sympathetic nervous system b. parasympathetic nervous system c. norepinephrine d. sympathetic nervous system and norepinephrine e. parasympathetic nervous system and norepinephrine
Blood pressure is highest in the __________
a. veins b. arteries c. capillaries d. venules e. arterioles