Which of the following characteristics would not favor delayed reproduction in a given species?
1.Individuals grow larger with age.
2.Larger size does not increase fecundity.
3.Mature individuals are likely to survive to old age.
4.Number of offspring produced increases with age.
2
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HeLa cells have been used in research to
a. identify cell structures. b. study sickle cell anemia. c. study the effects of hyperoxia on cells. d. study the mechanisms of cancer. e. study various lung diseases.
Which of the following is not a characteristic of cancerous cells?
A) immortality B) contact inhibition C) unusual shapes and sizes D) All of the above are characteristics of cancerous cells.
The "scientific creationism" view includes all of the following beliefs except that
A. biblical account of the origin of the earth is literally true. B. the organisms did not change from their original appearance. C. all species of organisms were individually created. D. extinct species are replaced with new ones. E. the earth is much younger than most scientists believe.
The white blood cells primarily responsible for adaptive immunity are
A) NK lymphocytes and neutrophils. B) B lymphocytes and T lymphocytes. C) macrophages and eosinophils. D) macrophages and neutrophils. E) neutrophils and dendritic cells.