Which of the following diseases is not caused by viruses?
A. smallpox
B. polio
C. warts
D. diabetes
E. influenza
D. diabetes
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In final preparation for a climb up Mt. Everest, climbers take up residence at base camp for a period of days to weeks before the climb. During this time, the climbers must acclimate physiologically to the low oxygen levels. Out of a group of ten climbers, one is unable to acclimate to the low oxygen levels, so he cannot make the final part of the climb. What would explain his lack of acclimation?
A. The levels of erythropoietin in his system are too low. B. The levels of hemopoietin in his system are too low. C. The levels of renin-angiotensin in his system are too low. D. The levels of adrenocorticotropin in his system are too low.
Which of the following is a location for a cell cycle check point?
a. between G1 and S b. between S and G2 c. between G2 and anaphase d. between prophase and anaphase
Matching. Choose the one most appropriate response
for each. Some letters may not be used. 1. ___ altruism 2. ___ instinctive behavior 3. ___ imprinting 4. ___ lek 5. ___ learning 6. ___ Lorenz 7. ___ operant conditioning 8. ___ Clark and Mason A. studied nest decorating behavior in birds B. imprinting in goslings C. capacity of an animal to complete complex, stereotyped responses to firsttime encounters with key stimuli D. problem solving without trial-and-error E. behavior is modified by experience F. voluntary behavior is modified in response to consequences of that behaviorstudied genetic basis of behavior G. communal display ground H. occurs during a sensitive period in which a following response or social attachment becomes fixed on a particular moving object I. self-sacrificing behavior
When the number of trinucleotide repeats in a gene is significantly above normal, it can produce a mutant phenotype
a. True b. False