What is the age structure of a population?
A) the curve that results when the likelihood of dying is plotted as a function of age
B) the curve that results when the likelihood of being alive is plotted as a function of age
C) the number of individuals alive in different age-groups at one time point
D) the difference in the age distribution of a population at two different points in time
Answer: C
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If you were to think of the cell as a car, and mitosis as a process that drives that car to go, what would be a good analogy for a cell that has a mutation in both copies of a tumor-suppressor gene?
A. The gas pedal of a car gets stuck while pushed down. B. The gas pedal of a car does not work at all. C. The brake pedal of a car gets stuck while pushed down. D. The brake pedal of a car does not work at all.
The connection between stem cells and cancer is that
A) all stem cells are also cancer cells. B) cells may become cancerous by expressing "stemness" genes. C) stem cells rescue cells that have become cancerous. D) both stem cells and cancer cells have inactivated telomerase.
Analysis of the nutrient content of phloem is performed on phloem sap that is made available when an aphid is cut away from its stylet.
Answer the following statement true (T) or false (F)
Florence Nightingale compared disease rates and other statistics for soldiers versus civilian populations. This is an example of __________.
A) descriptive epidemiology B) case reporting C) analytical epidemiology D) controlled experimentation