Which of the following is not characteristic of cancer cells?
(a) cancer cells often undergo angiogenesis
(b) cancer cells tend to be nonspecialized
(c) cancer cells undergo apoptosis
(d) cancer cells often have abnormal nuclei
(e) cancer cells can metastasize
Ans: (c) cancer cells undergo apoptosis
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Considering solutions with the following pH, which is alkaline?
A. 8 B. 7 C. 6 D. 5 E. All are alkaline.
Which of the following developmental events occurs
last? a. tissue specialization b. gamete formation c. gastrulation d. cleavage e. organ formation
What is the role a species plays in an ecosystem?
A) ecological niche B) trophic level C) biophilia D) biomass
The pH scale is a mathematical indicator of the
a. ability to dissolve in water. b. total amount of all ions in a solution. c. concentration of OH present in a solution. d. ability of a solution to buffer. e. concentration of H present in a solution.